Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e32ab5f8aa1bcba…

MALICIOUS

PDF

68.0 KB Created: 2020-12-09 11:41:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 975734ef10feec6810fdaa719d514a18 SHA-1: 1999e54b90ff29a682dcaff4f05bba59fc54cef4 SHA-256: 1e32ab5f8aa1bcbae41ab58eab6ca379edcfc65aed288192b54dd9a8c395a4a6
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, with one prominent URL pointing to 'traffking.ru'. ClamAV also detected this file as Pdf.Phishing.Trojan. The presence of numerous external links suggests an attempt to redirect users to potentially malicious sites, aligning with phishing or malware distribution tactics. No scripts were extracted, but the overall structure and heuristics indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffking.ru/123?utm_term=new+saint+thomas+institute+read+the+bible+in+a+year
    • https://cdn-cms.f-static.net/uploads/4369776/normal_5f8d18977ba97.pdf
    • https://batatifenosi.weebly.com/uploads/1/3/4/5/134513642/bezufezom-kigarod-wuvujomi-jesemex.pdf
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/debizikirapanas.pdf
    • https://lokixesope.weebly.com/uploads/1/3/1/6/131607163/d25473453c10.pdf
    • https://pagafamowadaf.weebly.com/uploads/1/3/4/8/134878907/betedifipapozisur.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf7c7b7a66e04eaf45c2a/1606219739281/watch_taken_online_free_dailymotion.pdf
    • https://uploads.strikinglycdn.com/files/cd0d9290-093c-4959-8db4-1352ad5d1b87/36091832223.pdf
    • https://static1.squarespace.com/static/5fc50966f7cf8c7540456227/t/5fc70a9e3ac9c763f4ce1bd7/1606879902696/clueless_pink_dress.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe0c2ffa04221c71e7fa4c/1606290480372/kieso_intermediate_accounting_chapter_14_solutions.pdf
    • https://uploads.strikinglycdn.com/files/3edddde3-a523-4526-8b3b-1db366571200/vaguzalofesusunasigeguna.pdf
    • https://uploads.strikinglycdn.com/files/90b42448-ae58-44bf-b734-13bba179e3a4/ionic_naming_worksheet.pdf
    • https://uploads.strikinglycdn.com/files/d178825a-f68b-4268-b333-86069607ae37/50267214772.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb1c.bin
df37b203ceb24b6cef9ffafff207af2aa89c8ec14a6dba41d611aee8ace643db		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB1C 5368 bytes
font_01_sfnt_off0000dd4a.bin
3db3803ab23409c70726722318cefc0e59c884e41d86fbc08e141bc5baa3c58f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD4A 11396 bytes

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