Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fd900fca0a02aa2…

MALICIOUS

PDF

68.3 KB Created: 2020-12-23 07:48:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: a2cf6f2c68f86f55a38d8d746cb47318 SHA-1: 2d3afdb3dc16a433a0e04a414ec288d85014848a SHA-256: 9fd900fca0a02aa22d707180d11800c73c7b44fa2d68c046a5f001b327defa4e
184 Risk Score

Malware Insights

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

This PDF was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external links, with one prominent URL pointing to 'trafftec.ru', suggesting a potential phishing or malware distribution campaign. The presence of a download button lure and callback phishing indicators further supports a malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://trafftec.ru/strik?utm_term=30mm+black+tile+trim PDF link annotation
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/7922058.pdfIn PDF document text
    • https://sugulidan.weebly.com/uploads/1/3/4/5/134508933/busosoxodisolu_tegaz_nuvaxiwab_riponij.pdfIn PDF document text
    • https://zasawebisev.weebly.com/uploads/1/3/4/8/134865024/dazanijuwesugoz.pdfIn PDF document text
    • https://xavozunop.weebly.com/uploads/1/3/4/3/134305705/5712293.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5f18d1a-77eb-44d7-afbe-c555370985cd/understanding_your_local_union_bylaws_quizlet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b02bfa3-67f3-4f97-ab17-d23f4c49574e/congruent_triangle_worksheet.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5af5fbda9c57a97dee486/t/5fca64d81cd998124d50e45a/1607099609312/15082248386.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e54d442-5c7a-4ff9-9937-5204f432b008/vanodarogagil.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/39385224661.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe13c0f81c9a2a0c6a1d53/1606292417060/longhorn_expiration_date_codes_2020.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc34e1bf9866f3fd2e3a1df/t/5fc927ad0ff59e308eb04550/1607018414030/jurassic_world_the_game_dinosaur_escape.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe04143c02f22b9dd3ff1d/1606288405060/mogefutilorupifebirixojut.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc30b2524b06a7eb30d4f82/t/5fc54fd79ee0f32b87036c71/1606766553173/disney_plus_error_code_39_android.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc292fabda9c57a97c8d54c/t/5fc503caf8cdb769c6810254/1606747082839/56906882885.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_off0000cd64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD64 5184 bytes
SHA-256: 19cb55d7381d2276d7f24e33cd18966d50a55844f775ceffee70a57ab6048ec0
font_01_sfnt_off0000deed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEED 11136 bytes
SHA-256: 2b304664586b1ba29cb1baaf0e33f66bdd7fbb448fb5f8a5659fba78bab0bf67

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