Malicious PDF — malware analysis report

Static analysis result for SHA-256 380315692432bdeb…

MALICIOUS

PDF

74.1 KB Created: 2020-11-14 01:36:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: ef5dd81bbea9bc28687f7a7f42990fc3 SHA-1: dab955ee059a6a4fccf2c0f0a1051e240bd2957f SHA-256: 380315692432bdeb9ca214a9411a9dcff2e2b7739733da4ce893f5a7ce1fc3ea
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffnew.ru/strik?utm_term=download+fnaf+pc+full+free PDF link annotation
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/kijozikinipufopuxax.pdfIn PDF document text
    • https://wisizexabebaj.weebly.com/uploads/1/3/4/4/134461468/xuzijefix.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/a8ce5796-8c5f-4d97-a77d-45611ed187e5/engineering_economic_analysis_13th_e.pdfIn PDF document text
    • https://s3.amazonaws.com/tifuwuw/emirates_cabin_crew_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/go_dj_lyrics_childish_gambino.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/99455381091.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc0bb7e7-9953-4e0c-9480-330f9eeb115f/zilifokewud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50434111-3e62-40dd-8b94-3ac734938635/ripuxodefofebifati.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/58611089615.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b34d4a63-9727-45b8-8a6b-309f27f9e63f/4950291239.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/once_upon_a_time_nadine_gordimer.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_off0000e91c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE91C 5064 bytes
SHA-256: c698298187ef5229a36513a30a7e4bf4165d5b2ed45b7ceec0cd3675bcc1575a
font_01_sfnt_off0000fa7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA7E 9856 bytes
SHA-256: 55d8fb60b2522e58e8ef39da731b11edc98446d96ffc4658ec44884e44ab52f9