Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e712d4982caaba4…

MALICIOUS

PDF

77.6 KB Created: 2020-11-10 01:10:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 5aae4de3c0fd82d686e3ae4f1feecd87 SHA-1: 60c51616339d5c38d95bed202d87cc645ea94fa0 SHA-256: 8e712d4982caaba40d07bf3a73f6264b49fdf9813f9537f01fa91585a785cc57
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/123?keyword=waternoose+villains+wiki In PDF document text
    • https://cdn-cms.f-static.net/uploads/4381302/normal_5f90f044bc928.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411500/normal_5f94a115a6e08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370309/normal_5f9e306ba7e30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375340/normal_5f8d0ec999639.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446500/normal_5fa9a048edc62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471273/normal_5fa538f5a55fe.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/b448a263-084b-4905-9018-3e0a4af71e88/the_year_one_challenge_michael_matthews_download.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/65721407148.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/lesser_quicken_metamagic_rod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c488960d-5682-4c7a-92eb-e26e1bc8eb20/jorababesubekunilogo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e10c3dc3-d1fb-4ace-a81e-2aff76cc70aa/return_man_or_steel.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/fapabedotexewivuviv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c2b835d-7254-476a-873e-83cd8b7a65ca/cobit_2019_design_guide_toolkit.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_off0000f1dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1DD 4908 bytes
SHA-256: 04ec042c04d4d3e281bbfea5cd76d51ecaad04d678fb433d7f79d33539aed8c6
font_01_sfnt_off000102b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102B7 12480 bytes
SHA-256: bacd5ee55a9d8372546d42493af73edeaea49a9576c4a6cdafa0a65a4ee56861

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