Malicious PDF — malware analysis report

Static analysis result for SHA-256 62b439b03a193041…

MALICIOUS

PDF

73.7 KB Created: 2020-11-19 02:07:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a6ed9bbe1e83d178f5ad190d4e94d744 SHA-1: 2683235dad096da5700bb541ba4db371901601db SHA-256: 62b439b03a1930416f50b3332c317ea8816901346dafbef042c886f6e2bf43bc
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-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://trafffi.ru/strik?utm_term=watch+hannibal+season+2+episode+2+on PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4459784/normal_5faf0ed6b37ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373776/normal_5f88f391dca13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405459/normal_5f9eea7f99eba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371004/normal_5f948a7b547bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374196/normal_5f89ab6cdf2f0.pdfIn PDF document text
    • https://vopevejefed.weebly.com/uploads/1/3/1/6/131606133/ginepoloduxeronew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486036/normal_5faec4377b561.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484375/normal_5fb2ea537b80c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421366/normal_5fab0094505a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463830/normal_5fae3e38e7614.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/3c5103d1-2eb7-4a2d-b673-dc09ebf37540/todep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5232ef8e-d3f2-4314-bdcd-38a09a8321d4/75065050190.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 3

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4C4 5136 bytes
SHA-256: 1e4b7a136e1454ad840c22a46217aaf145efdcbad817e544efca266c1fe6f05c
font_01_sfnt_off0000e62c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE62C 11228 bytes
SHA-256: 2fe1bb1f7ac4940c30ba9e7f1beba12e7190c9124e6a736469a2e65b542b6a24
font_02_sfnt_off00010c41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C41 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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