Malicious PDF — malware analysis report

Static analysis result for SHA-256 b000be21e0219d47…

MALICIOUS

PDF

71.4 KB Created: 2021-01-25 22:43:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 5f38cc97d6c1a8b4ff6f9b97982b0dce SHA-1: 3d42c6af830c060f45d7ab4bde03057b9861e9e1 SHA-256: b000be21e0219d47beed1f0f7f50f4b17975e440032cc915e7e44b0c34065d3e
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into visiting a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the presence of embedded URIs and the overall detection suggest a common pattern of using documents as lures for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafffi.ru/123?utm_term=single+covalent+bond+example PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375694/normal_5fd6854f49422.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494888/normal_6000279edc439.pdfIn PDF document text
    • http://gofidiva.iblogger.org/73798620465.pdfIn PDF document text
    • http://idealica-ufficiale.site/dutemejujxqir.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460247/normal_5ff2d6b0b2029.pdfIn PDF document text
    • https://cdn.sqhk.co/xesozugis/h3hHihQ/exploration_place_phone_number.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370746/normal_5fd6368935d96.pdfIn PDF document text
    • https://cdn.sqhk.co/wezufunin/jaEjjgg/88682903058.pdfIn PDF document text
    • http://findattime.com/nozotutazevexibiwivitlja6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445866/normal_5fc6146e07028.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474191/normal_60018ab8b81b1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xavisijividefo.epizy.com/silolatotoxemekasitivuxel.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/suxubirajiw.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/programa_para_unir_portable.pdfIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/kaleshwaram_project_details_in_english.pdfIn PDF document text
    • http://xuwuxubemepimox.rf.gd/92931047694.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/12420437593.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_off0000d84e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD84E 5492 bytes
SHA-256: d5d31df7bc2676ede903e166f018c24da1605476c00da1229f655aaebb65f4cb
font_01_sfnt_off0000eaf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF4 10820 bytes
SHA-256: ac72b46c36af249e6ff075f02816fa78cfc25dd2b13f5a07ea7a2f49a5ea1c53

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