Malicious PDF — malware analysis report

Static analysis result for SHA-256 67aaeb7c7341b462…

MALICIOUS

PDF

62.4 KB Created: 2020-12-04 03:50:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: adcf3a8a872cc4a02aac84f2a9fc37d8 SHA-1: be877c6b622d673df8588c2b6d5bf285183c4dae SHA-256: 67aaeb7c7341b4629170d6b7af87e5a72a49f9ba881da99ce8f8ecda1e412fce
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://cctraff.ru/123?utm_term=fort+zumwalt+south+high+school+football'. This indicates the document's primary purpose is to lure the user to a potentially harmful external site. While no scripts were explicitly extracted, the ML classifier and ClamAV detection strongly suggest malicious intent, likely involving phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://cctraff.ru/123?utm_term=fort+zumwalt+south+high+school+football In PDF document text
    • https://netaluzubik.weebly.com/uploads/1/3/0/8/130813777/6db18745e1ce09.pdfIn PDF document text
    • https://mobojifukan.weebly.com/uploads/1/3/4/6/134688158/7697167.pdfIn PDF document text
    • https://jebapawobukil.weebly.com/uploads/1/3/4/5/134521284/livovo-zodamivumakaxur.pdfIn PDF document text
    • https://wawupibinotab.weebly.com/uploads/1/3/4/9/134900246/fekemasojibajukaxixi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc587e7affbf90a6609e8ed/t/5fc8b344b74dd54858df10d7/1606988612999/7382097129.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc13908affbf90a66ec9ac0/t/5fc2ba30f81c9a2a0cfbee28/1606597174820/sopikunerowutivemutiv.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5282a5687f52b6b9ce1a7/t/5fc8ac6613de6e7981601ec1/1606986854525/23241943848.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf48e53c6ccf69f3548322/1606371557530/77790391202.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bc81c22-de9e-4499-96b3-ad724ec9be9b/guide_to_coding_ajcw.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/minecraft_symbols_top_right.pdfIn PDF document text
    • https://s3.amazonaws.com/kafifawono/cod_black_ops_3_zombies_maps_dlc.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd098a72f8b574a0f50247/1606224268899/rate_my_professor_ben_kenzer.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_off0000b56e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB56E 5532 bytes
SHA-256: 7b9bde786ea27ef20215df0fba1460ff4f8e7f6cc5ecf152e17740df36fe508d
font_01_sfnt_off0000c832.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC832 10716 bytes
SHA-256: baa71965852e3b48fcc3781cc6250ffd2959e2b7f699aad366303ab15dbd320a

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