Malicious PDF — malware analysis report

Static analysis result for SHA-256 e18544f764d16590…

MALICIOUS

PDF

58.2 KB Created: 2021-03-25 02:47:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f068fc3d2d77f8269c24f65da82124d6 SHA-1: 39e67892f8359e9785e238c36e27d1e0729ec7f0 SHA-256: e18544f764d16590f969afb906d0a906d04253d5c96f94012126b9b816c93763
124 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to disposable domains and Weebly-hosted files, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9637

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://dugedepap.ru/strik?utm_term=2000+suzuki+intruder+vs800+battery PDF link annotation
    • https://maxuvejalova.weebly.com/uploads/1/3/4/2/134265339/paratezaso.pdfIn PDF document text
    • https://pedamajemekiju.weebly.com/uploads/1/3/1/3/131380885/xofanemunusejedag.pdfIn PDF document text
    • https://cdn.sqhk.co/koletexun/R28T3id/singing_lessons_near_me_for_adults.pdfIn PDF document text
    • https://furimubabo.weebly.com/uploads/1/3/1/8/131856330/1539803.pdfIn PDF document text
    • https://foretenam.weebly.com/uploads/1/3/4/7/134700633/58a2fb4084.pdfIn PDF document text
    • http://jenupekob.iblogger.org/37147309865.pdfIn PDF document text
    • http://goxivomibivufuv.mywebcommunity.org/cch_ct.pdfIn PDF document text
    • https://cdn.sqhk.co/lodikorep/gh8T3Mh/46373564604.pdfIn PDF document text
    • http://mikovil.mywebcommunity.org/32080450903.pdfIn PDF document text
    • http://gemajesubon.22web.org/olympus_endoscopy_service_manual.pdfIn PDF document text
    • https://natuvowefuzun.weebly.com/uploads/1/3/4/5/134516005/9cf06bf.pdfIn PDF document text
    • https://faxojoduso.weebly.com/uploads/1/3/5/3/135351685/9cb73be77ce.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sagoralezerelo.onlinewebshop.net/e_book_reader.pdfIn PDF document text
    • http://foxozokibi.rf.gd/nekukezegifowisatubo.pdfIn PDF document text
    • https://49432a94-54bc-4d13-9d12-ea41d731e1b8.filesusr.com/ugd/a7c689_adab932857e8490ca53b83c3b6699a6f.pdf?index=trueIn PDF document text
    • http://fidegaf.atwebpages.com/physiology_of_synaptic_transmission.pdfIn PDF document text
    • https://78de399b-5cb1-4d05-8290-e7933402b20f.filesusr.com/ugd/10f998_38167e80e80c4ea38398cd789370de68.pdf?index=trueIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE1C 5348 bytes
SHA-256: 1edd808790a45e4d1da91526c728fbae70e1f92212d2068e62d6ced44b907468