Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d40201e801adf72…

MALICIOUS

PDF

66.3 KB Created: 2020-11-12 17:08:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: be086cae5aa460193947fc327db70104 SHA-1: dc9eed5e7808606b9612a4c4ca990a8e284a15ec SHA-256: 9d40201e801adf721f953dd36c79b9bc277e1f6c61588421547f0758ade7a8c3
156 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 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-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://traffnew.ru/strik?utm_term=word+sleuth+puzzle+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380545/normal_5f8e3dbda7380.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409394/normal_5fab252d3ee38.pdfIn PDF document text
    • https://mibakadediwo.weebly.com/uploads/1/3/4/5/134584598/9874267.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374199/normal_5fa2d823b0d7e.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/f6fe1762-8041-44a9-92c6-749ab0f87e5a/20486681526.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c38bf6e-62e1-4985-8932-a6471aeeefc0/86699023146.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b75411fc-26bd-4119-ab85-eaec54298ed9/goldeneye_007_rom_cheats.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d2a69e9-c22e-4b3e-b714-35585976de03/rutivorodo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c216784-509c-43f3-90f4-4c4e034e6b50/western_digital_smartware_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18c1d091-7db6-4e3c-b143-d902e8ca318c/3dxchat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e0602d0-6237-43cd-b2cb-3065b0216b4f/80855409010.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4063241c-6506-4298-84c4-072ebc561d9e/vawefewodawaze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f178db5-49c1-4859-bf22-861d1f23451a/xprivacy_pro_licence_fetcher_apk.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c835.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC835 5200 bytes
SHA-256: e86ce5fa412a3af0de183ee91db586a06412c5834e6b8e5a8038dab3738eed49
font_01_sfnt_off0000d9fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9FB 10272 bytes
SHA-256: 784b1c991b7230b97549e42503d88c527ba3a42fa4fbd530ab172d67cf4610b6

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