Malicious PDF — malware analysis report

Static analysis result for SHA-256 14a5dc3ffd64958a…

MALICIOUS

PDF

94.0 KB Created: 2021-05-05 11:47:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 1301d0f63533ac76ede0ff5b38128933 SHA-1: e7b10a7b0aed1b8c442ff465d03443422ffd4723 SHA-256: 14a5dc3ffd64958aa5cbe8a4f666f87766ddd0374d51780d88229753c9c617e9
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a URL that is likely part of a phishing campaign, disguised as product reviews. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest the document is designed to redirect users to malicious sites, potentially for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://mezovuduw.ru/strik?utm_term=kobalt+12v+air+compressor+reviews PDF link annotation
    • https://cdn.sqhk.co/rabataxuvax/jfCrhbf/zombie_hunter_sniper_apocalypse_shooting_games_apkpure.pdfIn PDF document text
    • http://leon-stavki.info/iceman_inheritance_amazon5govo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495413/normal_602f3321719b6.pdfIn PDF document text
    • http://shishkin-seed.xyz/les_cris_des_animaux_en_franais16giq.pdfIn PDF document text
    • http://samyog.ru/vifugewobimumbe9tf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448548/normal_5ff764d15aef2.pdfIn PDF document text
    • https://cdn.sqhk.co/vifamepupib/IUulhfL/piano_for_tik_tok_music_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369336/normal_6040de12c5449.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476936/normal_5fe1038a9bf16.pdfIn PDF document text
    • http://krym.today/zujajatozifakia9pom.pdfIn PDF document text
    • https://cdn.sqhk.co/lupobikud/EdXGtig/zulasazegasu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380890/normal_5fc61c566ac02.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393779/normal_5ff0037779146.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389816/normal_6041e7c641e55.pdfIn PDF document text
    • http://euroshopmn.space/184195525389347o.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492259/normal_60352867b4f94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485929/normal_6026bf74a5425.pdfIn PDF document text
    • http://mon-cmso.best/459141081236d5xs.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/nimuwet/29799990694.pdfIn PDF document text
    • https://s3.amazonaws.com/nafamaragisek/nifune.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/bleacher_report_lakers_list.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/11432774899.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/police_crash_report_online_wa.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_off00012f9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F9F 5524 bytes
SHA-256: e7b33009c305f7cee4bcb51d53d80e7b0ee679ffc494d8a104c29d0277047dbf
font_01_sfnt_off00014270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14270 11404 bytes
SHA-256: af455d8af3f38051cec70b6e9f457ed8b905d85fee78669bc1a7d90cd79745a6

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