Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eea0b80ec368123…

MALICIOUS

PDF

69.6 KB Created: 2020-11-11 20:47:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e991c18bf882a9aeffcb71b85d4e8306 SHA-1: d7d20b18a0f4b45faa5c8223f3dd646ecba28fbf SHA-256: 6eea0b80ec368123f378a782bb051c00077df6d1307e4d2251860609db9acd79
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 0.9997

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=agnus+dei+violin+sheet+music+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365536/normal_5f8758cd7d71c.pdfIn PDF document text
    • https://jebezefekoju.weebly.com/uploads/1/3/4/7/134737834/wobutegiwipox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410415/normal_5f9e7f58cb1c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370051/normal_5f8dc323c4455.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390681/normal_5f918d4f316cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376606/normal_5f99edec037bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369927/normal_5f97cbc7d40bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452852/normal_5f9f852437a9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378386/normal_5f9fbd617250f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413590/normal_5fa2ed54a67a6.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/08bf9c63-18a8-4b56-8592-f26b886dc555/laloludotivobukute.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81cbaf5e-ef75-4709-ba78-fbd0182bdbaa/30205114991.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26019155-b406-4a37-b08a-7d597345ba18/savonoxut.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_off0000d204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD204 5312 bytes
SHA-256: 790ade158f206f9be5b455885973763cbc5422570d8da753ab61967421996b91
font_01_sfnt_off0000e406.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE406 11548 bytes
SHA-256: d8a34d0f1c886c966cd4d37ed896951e05a2b54d5fd178ed6a85b2bf4a813431

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