Malicious PDF — malware analysis report

Static analysis result for SHA-256 d989cb736dbff8d2…

MALICIOUS

PDF

94.5 KB Created: 2020-09-06 12:22:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dd764118e974f038c4d21ad13d7670e4 SHA-1: fec27f47e4b4d24ce125372e0e95c054f580fad5 SHA-256: d989cb736dbff8d26154478abc1040d849a2921d0e9b51162f8a52354381139c
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 (ttraff.link) disguised as a subtitle download page. This indicates a phishing or malware distribution attempt, likely using a spearphishing attachment as the initial access vector. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9905

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.link/wix?keyword=wonder+woman+2017+subtitles In 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
    • https://cdn.shopify.com/s/files/1/0437/6307/3181/files/73440581444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/52825138881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8276/6750/files/619245787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1080/8213/files/lemasozinafapuloxivajized.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9080/8737/files/aircraft_landing_gear_hydraulic_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9148/3041/files/consumer_report_best_tv_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/1815/7989/files/66783453295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2313/0009/files/56509791556.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/7911/4408/files/markdown_cheat_sheet_table.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9590/6721/files/tajadolovubakemenosut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2371/8805/files/98087076759.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8891/2290/files/penanesugebepuleter.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 15

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_016_off000138d7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x138D7 18892 bytes
SHA-256: 2f0f80db9e8871d083fdcf24edaea7760edc574062ef06e3d78c75733e5b8771
font_00_sfnt_off00005c6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C6D 7916 bytes
SHA-256: 2e595141cfc5a730015d867094056734cd151f5b215480bba884d522f17c5808
font_01_sfnt_off000070cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70CD 4032 bytes
SHA-256: 9440f71eefa4f59c7a71b16fb0b9f65724f2db68f71ee41650680a98f027c4b0
font_02_sfnt_off00007f3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F3E 5624 bytes
SHA-256: f9810967f27e18a48e06b02f5028ab15670ec436aefe5ff5ebd4b0e342562511
font_03_sfnt_off00009262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9262 2656 bytes
SHA-256: ff8289fcab20b7b81f5dc7c47458689637225d7099c48932a46d6898d6123f6c
font_04_sfnt_off00009d67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D67 4140 bytes
SHA-256: 2a2f73c0ee504ae8509221dab9a50e72e6c400a18e3952d3eee660ba18a0c3b1
font_05_sfnt_off0000aa84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA84 3048 bytes
SHA-256: b5c6b6e0c9ada0bf1c6b02372d38a6194b0fc304f51b15768a03b7bd417def48
font_06_sfnt_off0000b693.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB693 2328 bytes
SHA-256: 18b250f24057ce91e4a59b25c1eec79fa8b4d7e2cb9f6c0de02c7e032a072fd4
font_07_sfnt_off0000c14a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC14A 2604 bytes
SHA-256: 5fd53e2058c4f5d98b70161d670f1e42036942552fef68ac845a5e47e2d7f715
font_08_sfnt_off0000cc2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC2B 3840 bytes
SHA-256: 5b8e8035f8940535bfb5f3d78de7d5c45dbc51c905faa5d9788b8fc152e96872
font_09_sfnt_off0000da39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA39 2108 bytes
SHA-256: 5fc9e2cd4e7ad04544edda2023dd698132b65daf167a61e09de9fd8de66d8b52
font_10_sfnt_off0000e411.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE411 4336 bytes
SHA-256: 87016e8933cc862d1d188edfbee698abcff8178ed3d6b510b61737ee02f60284
font_11_sfnt_off0000f1b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B1 6148 bytes
SHA-256: 488ffee5e9c33bcc1f3f00aec749f35977d0cdd209ffadaee35194d66ecc177d
font_12_sfnt_off0001019b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1019B 18056 bytes
SHA-256: 1be4b71b266467aa7df2dc665614fa0e5e025f37eabf431dabeda9466b70381d
font_14_sfnt_off00015839.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15839 3536 bytes
SHA-256: 0a763f02db1d1c5d34f23894b7a4af96ea2433ab124f48894d552220baaa19fc

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