Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbaaf4b283715f7a…

MALICIOUS

PDF

54.0 KB Created: 2021-02-26 19:34:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 7490c5867ab9714b32a0d3bfad6515eb SHA-1: 31a4117c97ac053c3b395c234782c725ea62cc62 SHA-256: dbaaf4b283715f7a46df2fcef23ad43b5558c839cc39e6f9c031c211d934f057
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs, with one specifically pointing to a domain that appears to be a link farm designed to redirect users to potentially malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect the user to a malicious site, possibly for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6563

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://maypoin.ru/award?keyword=how+to+use+magnum+x5+true+airless+paint+sprayer PDF link annotation
    • http://lnstagramsupportlives.com/amnesia_the_dark_descent_apkx0tsc.pdfIn PDF document text
    • http://topvideo.design/nikebifokefegajisaba677ie.pdfIn PDF document text
    • https://jototafedapabo.weebly.com/uploads/1/3/1/3/131398279/8260514.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389830/normal_5ff1d9d92604a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404313/normal_6038c8b9c2d2e.pdfIn PDF document text
    • http://fesupopimos.66ghz.com/26635434219.pdfIn PDF document text
    • http://capridigi.com/vuwoweregaponc0v.pdfIn PDF document text
    • http://gelchlen.fun/construction_site_visit_report_example5xlys.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390663/normal_5fdf87f75f48b.pdfIn PDF document text
    • http://greyfruit.space/gizudizexejuteripivagexi1ureg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374359/normal_6002bfb3887fe.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/dayton_freight_bol_template.pdfIn PDF document text
    • http://lupugavediroz.rf.gd/john_deere_excavator_spec_sheet.pdfIn PDF document text
    • http://worupowa.epizy.com/liwatazarela.pdfIn PDF document text
    • http://wetoxikilosawa.epizy.com/vojodugujelerotepizajin.pdfIn PDF document text
    • http://lejugilisotev.rf.gd/conjunctions_multiple_choice_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/ropinulatogonenunuwe.pdfIn PDF document text
    • http://wixezujixib.epizy.com/aap_exchange_transfusion_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/nuzevutatulijogivolijedo.pdfIn PDF document text

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