Malicious PDF — malware analysis report

Static analysis result for SHA-256 37e34edc681e849f…

MALICIOUS

PDF

87.3 KB Created: 2021-03-01 19:23:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 888e829b486253f4903f554541a25fa3 SHA-1: f777d059d150a933ed3cc13b43dd684a7040a3b9 SHA-256: 37e34edc681e849f62cd1fd4c902e0dd9aeaf27ed24697ff25f180024dc744df
134 Risk Score

Malware Insights

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

The PDF contains numerous URLs disguised as movie download links, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to trick users into downloading further malicious content or visiting phishing sites. No scripts were extracted, but the PDF structure and URL patterns are indicative of a malicious link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://botokaw.ru/award?keyword=perfume+the+story+of+a+murderer+full+movie+in+hindi+hd PDF link annotation
    • https://cdn.sqhk.co/samivegin/eNgeLcB/hockey_stick_putter.pdfIn PDF document text
    • http://premiumpornclips.com/mimenetabufavikev7dlaa.pdfIn PDF document text
    • http://picsonair.com/jakizejavaxosilexozuwakomgwxl2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369493/normal_5fda00ed6b4df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388169/normal_600a9899ba1b6.pdfIn PDF document text
    • http://xidoxuj.22web.org/87648962131.pdfIn PDF document text
    • http://jirafka.space/45748594706d2e9s.pdfIn PDF document text
    • http://merovew.xyz/2138161143mrc0p.pdfIn PDF document text
    • http://bestrongbyg.com/1281518060w0epj.pdfIn PDF document text
    • http://amaryllis.space/venusawelimixupanuvojbn.pdfIn PDF document text
    • http://carluxepaint.site/chick_fil_a_application_indeed1l2m0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369915/normal_6034ffa7523cb.pdfIn PDF document text
    • http://medicinfo.online/koxiwerojadekaxipusaakagj.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://javasuk.epizy.com/ajeeb_apni_yeh_zindagi_hai_song.pdfIn PDF document text
    • http://xafasefulunasa.epizy.com/bovadodeg.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/aviation_security_in_india.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000f55a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xF55A 9464 bytes
SHA-256: 44564493c97e942dc6d936f9be5db08d6ec04206595d3e7ef0e2c8288a4f0a3b
stream_006_off0001356a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1356A 16732 bytes
SHA-256: 96880f79db25a47824cccd1a297c8b06427154d355c27bc90784c4de5b90c0fc
font_00_sfnt_off0000e376.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE376 5312 bytes
SHA-256: be82e18a400af2e8bbbc029cb9176a5745378eb187fec456f56b51ecaa124da1
font_02_sfnt_off00011015.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11015 10900 bytes
SHA-256: fe52b0adffb09b22bbd19c63ead2840ec1a0e4d26c7f5c3896e665d57f5d57da

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