Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6c1687a924a37f2…

MALICIOUS

PDF

84.6 KB Created: 2020-12-30 02:54:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 8e261933fc440306b98b64645ede0e45 SHA-1: 97d5c7c7ecf6989242a44f913dc26df544719b3c SHA-256: c6c1687a924a37f2795c2715db5e479cec0469e2c9d93653b09fb777f505266b
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to host malicious content or redirect the user. The document body, though heavily obfuscated, contains text related to "best gifs ever made" and authoring application details, suggesting a lure to a malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafftec.ru/123?utm_term=best+gifs+ever+made PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4488336/normal_5fd10660d2cc7.pdfIn PDF document text
    • https://cdn.sqhk.co/suwapipejob/zwjfgfM/silvester_disco_mix_80s_90s_hits.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411918/normal_5fc3100532d29.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379237/normal_5f95751bc2d2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468294/normal_5fa99db0d2995.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369781/normal_5fb6bd751fe3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393353/normal_5fa0a88dcad70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417118/normal_5faf95ac0266a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/79416428507.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/675541f5-19de-44f9-83ca-def4d9c44260/4626619193.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/595b080d-b537-4e89-9585-d58e4091a9e1/sea_scouts_uniforms.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010088.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10088 5304 bytes
SHA-256: 77ac9f66c7633d459aa9e01b0276d1f5d2e612cf305db4a2430f4e95cd96ebdb
font_01_sfnt_off00011284.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11284 3120 bytes
SHA-256: 2d1c02d7faeb7dad5af5d103f135926a0d4fd4e69f3a7da8959d46cf8e88466d
font_02_sfnt_off00011f07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F07 10844 bytes
SHA-256: 01ceb42a7263461281458ced1d6f832ed78f4d91be82e4cdf99200b9f88ca1f3

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