Malicious PDF — malware analysis report

Static analysis result for SHA-256 04686dbca7567764…

MALICIOUS

PDF

214.0 KB Created: 2020-11-14 15:04:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: eea0660b447498ca0328dae7487f877f SHA-1: 93d7b840871a36811a0f58f89ee80db06cdb53f2 SHA-256: 04686dbca756776456e7c87787eea94cc6bd825079a9773961dff41f262dd52b
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating phishing and trojan characteristics. The embedded URL points to a suspicious domain, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains references to 'Google docs' and 'borderlands 3', likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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
  • 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://traffset.ru/123?utm_term=google+docs+borderlands+3 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369141/normal_5fa26aa2e873b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425515/normal_5f9e52c789626.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366029/normal_5f86f46d97368.pdfIn PDF document text
    • https://kobigaxa.weebly.com/uploads/1/3/3/9/133997295/pobozupelo-vobolikema.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381090/normal_5fab87ce0d478.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446937/normal_5fa2604011895.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366331/normal_5f88214c1b62f.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/979cc5bc-a318-46eb-8cbd-040cc2f80fd7/5214643150.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a225af84-dd7a-4c96-a1a7-7a5d3eb4aa91/jurinamozeveduxumamuwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc8afed8-ef67-4888-a695-48c2b0c23f35/san_francisco_garter_snake.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08396355-802c-498c-910a-aaeb850fc182/telangana_formation_day_song_v6_news_special_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7f5038e-97a0-4617-aab9-6ff7fca35c8d/gc_miner_poe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11ca3cfd-d8a7-410d-ac03-1ab84c9caf5d/tufebutagasudezuxuwuxar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6876d2c-8452-461b-a0a9-95fce56269f3/zojirushi_bbcc_x20_manual.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_off00030a37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30A37 5440 bytes
SHA-256: f6ccf839ab9bcd9391fd9d276e903e748e8655205ce9fb8cd5542d2d95520b3a
font_01_sfnt_off00031cc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31CC3 15068 bytes
SHA-256: 5738ad5dc3a2410f95f875be821e997a6a7bd71e5eb772d573ac18120d3b2214

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