Malicious PDF — malware analysis report

Static analysis result for SHA-256 83da61e246597f44…

MALICIOUS

PDF

100.0 KB Created: 2020-08-14 05:31:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e62ded35d03b0ac8096163d25f562d8d SHA-1: 8dd585688c164eb2082c945336e2258a3c7d9cd4 SHA-256: 83da61e246597f4468cdb6cf7fcb1ab97b1ae3fc01d5be2ab947c69db560a729
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing lure. The primary redirector URL is associated with malicious activity. The document body contains the phrase 'Nightmare cinema subtitles' and the malicious URL, indicating a potential lure for users seeking content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9836

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=nightmare+cinema+subtitles In PDF document text
    • http://files.gietal.net/uploads/1/3/1/8/131857305/lupitefi-paxababejepawuz-zanedekan.pdfIn PDF document text
    • http://nixeve.cfpleasanthill.org/uploads/1/3/0/7/130739430/c4ffdac0a9546.pdfIn PDF document text
    • http://files.theclaytonconnection.com/uploads/1/3/2/6/132682897/wilidajo.pdfIn PDF document text
    • http://kijon.outhustleathletics.com/uploads/1/3/0/7/130775436/9efab555b33d3eb.pdfIn PDF document text
    • http://files.goringgaphistory.org.uk/uploads/1/3/1/4/131409761/bec739d7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn PDF document text
    • http://smc.org.inhttp://smc.org.inIn PDF document text
    • http://www.indictrans.orgIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1415/9521/files/87840025583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8148/9813/files/5701728191.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/6067/7019/files/limiting_adjectives_worksheet_4th_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4977/0389/files/xejutigodifejitelijet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6661/2130/files/libro_de_mario_benedetti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28650507632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7849/2072/files/56429490678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/femepotufitaxaturu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/92780054389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3220/4696/files/37860757805.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8164/5736/files/sonic_express_labler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8583/1070/files/ayyappa_swamy_photos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2135/2606/files/korean_learning_books_free_download.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • https://gitlab.com/smc/meera/blob/master/COPYINGIn PDF document text
    • http://sinhala.sourceforge.net/In PDF document text
    • http://sinhala.cvs.sourceforge.net/viewvc/*checkout*/sinhala/sinhala/fonts/CREDITSIn PDF document text
    • http://www.gnu.org/licenses/gpl-2.0.htmlIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 16

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_016_off00013f8a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x13F8A 18892 bytes
SHA-256: 2f0f80db9e8871d083fdcf24edaea7760edc574062ef06e3d78c75733e5b8771
font_00_sfnt_off0000683d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x683D 7916 bytes
SHA-256: 2e595141cfc5a730015d867094056734cd151f5b215480bba884d522f17c5808
font_01_sfnt_off00007c9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C9D 4032 bytes
SHA-256: 9440f71eefa4f59c7a71b16fb0b9f65724f2db68f71ee41650680a98f027c4b0
font_02_sfnt_off00008b0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B0E 5092 bytes
SHA-256: 27acf31d1a338b8700f2f904f02b892ba6f4d271c834849c0bc669218e12e0ce
font_03_sfnt_off00009c2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C2D 2656 bytes
SHA-256: ff8289fcab20b7b81f5dc7c47458689637225d7099c48932a46d6898d6123f6c
font_04_sfnt_off0000a732.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA732 4140 bytes
SHA-256: 2a2f73c0ee504ae8509221dab9a50e72e6c400a18e3952d3eee660ba18a0c3b1
font_05_sfnt_off0000b44f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB44F 3048 bytes
SHA-256: b5c6b6e0c9ada0bf1c6b02372d38a6194b0fc304f51b15768a03b7bd417def48
font_06_sfnt_off0000c05e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC05E 2328 bytes
SHA-256: 18b250f24057ce91e4a59b25c1eec79fa8b4d7e2cb9f6c0de02c7e032a072fd4
font_07_sfnt_off0000cb15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB15 2604 bytes
SHA-256: 5fd53e2058c4f5d98b70161d670f1e42036942552fef68ac845a5e47e2d7f715
font_08_sfnt_off0000d5f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5F7 3840 bytes
SHA-256: 5b8e8035f8940535bfb5f3d78de7d5c45dbc51c905faa5d9788b8fc152e96872
font_09_sfnt_off0000e40c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE40C 2108 bytes
SHA-256: 5fc9e2cd4e7ad04544edda2023dd698132b65daf167a61e09de9fd8de66d8b52
font_10_sfnt_off0000edea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDEA 4336 bytes
SHA-256: 87016e8933cc862d1d188edfbee698abcff8178ed3d6b510b61737ee02f60284
font_11_sfnt_off0000fb8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB8A 6148 bytes
SHA-256: 488ffee5e9c33bcc1f3f00aec749f35977d0cdd209ffadaee35194d66ecc177d
font_12_sfnt_off00010b74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B74 16824 bytes
SHA-256: 4f938f50ab0df544c0759823802871915842ac3dfaa997d4ed664bd16f780f0f
font_14_sfnt_off00015eb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15EB0 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
font_15_sfnt_off00016cbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16CBC 3536 bytes
SHA-256: 0a763f02db1d1c5d34f23894b7a4af96ea2433ab124f48894d552220baaa19fc

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