Malicious PDF — malware analysis report

Static analysis result for SHA-256 adf6094bff8b2b32…

MALICIOUS

PDF

69.5 KB Created: 2020-12-22 01:59:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 0a5c8a864beb5a723b55242706e13de2 SHA-1: 5a6f1a83e71b61cdf6cd4b6bf8a9b68c8979556f SHA-256: adf6094bff8b2b32a49bf358f4828765f615b7ffb57af8e75398af6207d14c8b
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. The embedded URL 'https://trafffi.ru/strik?utm_term=z+tune+body+kit+for+r34+gtt' and other linked PDFs indicate a likely attempt to redirect users to malicious sites. ClamAV and ML classifiers also flagged this PDF as malicious, supporting the phishing and potential malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://trafffi.ru/strik?utm_term=z+tune+body+kit+for+r34+gtt PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4375703/normal_5fcf094c2bef7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380411/normal_5fd680e4af9ae.pdfIn PDF document text
    • https://pesegoniz.weebly.com/uploads/1/3/4/4/134497823/pavifexurejo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380379/normal_5fa673ecc5a14.pdfIn PDF document text
    • https://kimulidorifuvup.weebly.com/uploads/1/3/4/8/134856260/5873661.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454546/normal_5fd0f2c10d092.pdfIn PDF document text
    • https://lozuninusagutog.weebly.com/uploads/1/3/5/3/135309735/1998800.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486983/normal_5fe1264de246d.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/5fc013b624b06a7eb3fa8a9b/t/5fc1bc182dd96f59182fa463/1606532121079/shaina_magdayao_instagram_profile_picture.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fe02e3cf67c863bcd195170/t/5fe11ca7ccb7914e778d6079/1608588456303/rojixabatokogitusuvemipos.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fe01fb3546cca2c4160e82d/t/5fe0b332fb7de13a64907b78/1608561458512/52365713549.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce49c4ccd2b773201eb9aa/t/5fd741427fc52c2069407fb8/1607942468256/23533955970.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd2a692dcd53187f1e8c64/t/5fde64065809ae3434fa37e3/1608410120588/the_villain_full_kannada_movie_hd.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_off0000cfcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFCF 5168 bytes
SHA-256: 47d0e8abd6201f6e076de19cb4ad149d0a7e845bdf258aba349d50c306e6e74e
font_01_sfnt_off0000e192.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE192 12176 bytes
SHA-256: 836cd4a90e845bd53551f6fb1ac2f31a0b1ef10077e2954ce806f651b9857cce

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