Malicious PDF — malware analysis report

Static analysis result for SHA-256 da329dc6a648bb64…

MALICIOUS

PDF

73.5 KB Created: 2021-04-03 20:58:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 31424042325825252f0b0b07cee1d404 SHA-1: 60c64c0d98b73f5ded34a8a692bf21dd43960a55 SHA-256: da329dc6a648bb64078c002d0b563b0611ea1503e2bfadfdd34460caa9fa5844
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or a scam. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content, potentially leveraging PDF vulnerabilities or social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9739

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
  • 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://mezovuduw.ru/award?keyword=lg+vrf+air+conditioning+system+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4489599/normal_6054e6b279cac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414680/normal_602d9637c1b16.pdfIn PDF document text
    • https://gumabudisipinef.weebly.com/uploads/1/3/2/7/132712006/34b17ccd7.pdfIn PDF document text
    • https://dusivasawomila.weebly.com/uploads/1/3/4/6/134660852/df5abc.pdfIn PDF document text
    • https://porojole.weebly.com/uploads/1/3/4/4/134462866/vabema.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391602/normal_5fd0e97ab57cc.pdfIn PDF document text
    • http://tapikival.22web.org/94374162390.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414487/normal_605fa42f39f8b.pdfIn PDF document text
    • https://taduvovu.weebly.com/uploads/1/3/1/8/131871704/25543.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417314/normal_604cd67cb8b21.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wusipoz.rf.gd/wexero.pdfIn PDF document text
    • http://xuzatazuji.epizy.com/madufemilotawizekir.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/bepamifaje.pdfIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/nys_dmv_cdl_test_hours.pdfIn PDF document text
    • http://wemosoxa.rf.gd/safety_rules_for_construction_sites.pdfIn PDF document text
    • https://s3.amazonaws.com/fusopoxipo/stylish_indesign_magazine_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/what_does_gimpy_mean_in_slang.pdfIn PDF document text
    • http://bizebiza.rf.gd/dilapidation_report_template_word.pdfIn PDF document text
    • http://budokukikaririd.rf.gd/xokib.pdfIn PDF document text
    • http://nimuzujonigidu.rf.gd/steve_jobs_autobiography_amazon.pdfIn PDF document text
    • http://bawozejowavonot.rf.gd/safoxekupikeg.pdfIn 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_off0000fa1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA1C 5544 bytes
SHA-256: f94783e6d746e62d310f934763a322a07d62661e6fa2fd0d06075089ec605078

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