Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2f2a8727bcca489…

MALICIOUS

PDF

72.2 KB Created: 2021-02-28 18:37:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: d66e3b548932d3dee7ee4ab2f73ccb60 SHA-1: ef4dac661fc8b08ebe5400ff1a179fbacd1566bc SHA-256: d2f2a8727bcca48969ccfb687db90188c22a25fc8f0756f5751083829e3b854f
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with the primary one being `https://fokemale.ru/strik?utm_term=2000+suzuki+quadrunner+250+oil+change`. Heuristics indicate this PDF acts as a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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
  • 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://fokemale.ru/strik?utm_term=2000+suzuki+quadrunner+250+oil+change PDF link annotation
    • https://cdn.sqhk.co/jotepomi/whjdnkE/73624966151.pdfIn PDF document text
    • https://kofoxutekibefa.weebly.com/uploads/1/3/1/4/131454286/4135771.pdfIn PDF document text
    • https://cdn.sqhk.co/videmixolute/HyUgdVY/viruses_are_living_organisms_true_or_false.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/cijWnUs/laguwinuragalirofis.pdfIn PDF document text
    • https://wibixebaroz.weebly.com/uploads/1/3/1/8/131856543/rijudoxawidetapewo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nolewepanuvaxup.epizy.com/the_lottery_shirley_jackson_summary.pdfIn PDF document text
    • http://gekazez.epizy.com/39027076453.pdfIn PDF document text
    • http://juzujodajemafa.rf.gd/facebook_contact_number_aus.pdfIn PDF document text
    • https://s3.amazonaws.com/wanalovum/marketing_plan_template_ppt.pdfIn PDF document text
    • http://gujugune.rf.gd/soxivep.pdfIn PDF document text
    • https://s3.amazonaws.com/tanapilamaxi/abs_academic_journal_guide_2018.pdfIn PDF document text
    • http://binaxasomeroxat.epizy.com/avira_free_antivirus_2020_windows_10.pdfIn PDF document text
    • http://nolonogatifotop.epizy.com/appium_latest_version.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_off0000db53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB53 5744 bytes
SHA-256: a2e04ff9fbc124be48fa9a5ee9416a3c2820fe53b9b816f709dc5c8469fa0879
font_01_sfnt_off0000eee7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE7 10832 bytes
SHA-256: 92adcea8c84b5b2564f3f30f45fba9f81450dea315032b142f4940a7d8c92c35

Open this report in the interactive analyzer, or submit your own file for analysis.