Malicious PDF — malware analysis report

Static analysis result for SHA-256 190c467e01eb9e96…

MALICIOUS

PDF

69.9 KB Created: 2020-11-20 03:00:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: ab6421d61ddce8aa4e910b07a78c16f2 SHA-1: 79160ff05e921ad74e0ed6e1fd0791e5d2ad45b8 SHA-256: 190c467e01eb9e96b57ed9c71a4552bc1dfbb3f40605277086c9380ccc40d8ad
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous external links, including one to 'traffset.ru', suggesting a phishing or link-farming attempt. The presence of embedded JavaScript, although not fully detailed, indicates potential for malicious scripting to execute.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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://traffset.ru/123?utm_term=2+minute+step+test+rehab+measures PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370302/normal_5fa8e51648756.pdfIn PDF document text
    • https://nurixuwabojud.weebly.com/uploads/1/3/4/5/134587723/momamakapomer.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/memul/the_progressive_era_questions_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7b0b84a-9bb0-4845-b8a3-a697575aca16/suzuzuvarebukadeworogun.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/93836398205.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/fufojamej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b627ad45-3db3-483b-b148-a1a31c979ba3/rock_and_roll_hoochie_koo_live.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/creative_tim_material_dashboard_pro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a0aee87-166b-46ec-bdf4-14703787baf0/dumizesosokazasetizom.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_off0000d629.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD629 5204 bytes
SHA-256: 7a2dd30195b428a6ddadb7aa75647a84895e2774b3c2cf0e68cfd6234ed3160d
font_01_sfnt_off0000e7a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A9 10508 bytes
SHA-256: b345acc1aed7a34fd155b0753ed9d459865bf118b3b36ef87da4448ffc6ca685