Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eeb24bea1487b9c…

MALICIOUS

PDF

68.6 KB Created: 2021-01-05 22:45:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 5578123098bdbe6d92eb85c3d06b3099 SHA-1: 7dc4b57a601eb312cf5d0cc4c3fb84499d5e15cc SHA-256: 6eeb24bea1487b9cf432716b4187532bcd32646c2818e963bb568d6922869d99
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/123?utm_term=3+circle+venn+diagram+template+with+lines'. This indicates the document's primary purpose is to lure the user to a potentially malicious site. The ML classifier and ClamAV detection further support its malicious nature. No scripts were extracted, but the embedded URL is sufficient evidence of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://gettraff.ru/123?utm_term=3+circle+venn+diagram+template+with+lines In PDF document text
    • https://cdn.sqhk.co/wolitobutak/Liadzbg/62358908055.pdfIn PDF document text
    • https://cdn.sqhk.co/vuritukupus/jg93gct/ant_radio_service.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489839/normal_5fad59d9e56c1.pdfIn PDF document text
    • https://cdn.sqhk.co/digijodaga/CHjgytY/89583020133.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4504791/normal_5fcf7c6d7a467.pdfIn PDF document text
    • https://pivozedotafi.weebly.com/uploads/1/3/1/0/131070355/a7f91e4c9.pdfIn PDF document text
    • https://zetaxufonepijak.weebly.com/uploads/1/3/4/3/134353616/niropunuxekoraj_luloxejava_sifiluseva_gixuzexejijunuk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404741/normal_5fa09902357ec.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zowejunef/vtech_phone_manual_how_to_check_voicemail.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d362a417-fbdb-420f-a635-2512b1a514eb/kodupup.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d08a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD08A 5708 bytes
SHA-256: a58758b57762268879a6e64c82572710069ee94cf13dfd1ae94f9fff5f8cedda
font_01_sfnt_off0000e3d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D7 9952 bytes
SHA-256: 44b71e04388090868ab6434742fd2b452a1a9defe8fc7868920198c9db7fc72a

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