Malicious PDF — malware analysis report

Static analysis result for SHA-256 8957ad84b1aaf64c…

MALICIOUS

PDF

58.2 KB Created: 2021-02-20 03:00:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 127112bcc54bd33b2c6c2c6fe27ef897 SHA-1: c9156e0b964f089205c430d98c410a09e50c9f64 SHA-256: 8957ad84b1aaf64c71f24de301686b069a4274c598579b2a29b13420d5bfb4ed
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, with a high concentration of them pointing to disposable or suspicious domains, indicating a link farm designed to obscure the true destination. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, contains keywords related to a 'dirt bike for sale', suggesting a lure to entice clicks on the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9085

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/strik?utm_term=50cc+dirt+bike+for+sale+used PDF link annotation
    • http://mastericy-chistoty.ru/70750458153pn4qv.pdfIn PDF document text
    • http://maddot.space/74116540337qprxh.pdfIn PDF document text
    • http://springwin.space/kylo_nifi_templatesysjbs.pdfIn PDF document text
    • http://drive4mclanemilwaukee.com/gba_emulator_apk_ios40tpi.pdfIn PDF document text
    • http://rubka.space/what_is_logic_gates_in_electronicsw9tc6.pdfIn PDF document text
    • http://wordwild-store.com/790103741661xxko.pdfIn PDF document text
    • http://reduslim-official.website/corel_wordperfect_x9_manualx6pjz.pdfIn PDF document text
    • http://kprovk.xyz/93607918407t5t9x.pdfIn PDF document text
    • http://hihikane.space/aconitum_napellus_30ch_como_tomarjz58b.pdfIn PDF document text
    • http://whitetwo.space/sustaining_the_earthft24f.pdfIn PDF document text
    • http://sobikunukozi.rf.gd/nirokifupulolilo.pdfIn PDF document text
    • http://sajavisazoz.epizy.com/46172278492.pdfIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/89161918665.pdfIn PDF document text
    • http://dabesajunelazul.rf.gd/mejenafebanal.pdfIn PDF document text
    • http://wewozewifepono.epizy.com/vamuwabafobopolugagamasiz.pdfIn PDF document text
    • http://jikokajogov.rf.gd/janapada_kannada_movie_songs_free.pdfIn PDF document text
    • http://ribowiga.epizy.com/9179209918.pdfIn PDF document text
    • http://nisebot.epizy.com/bavogujas.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/35575928228.pdfIn PDF document text
    • http://wejelinemadagep.rf.gd/gozekozokinujofunek.pdfIn PDF document text
    • http://denowejifonur.epizy.com/30823351465.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/41711687129.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/cassava_flour_processing_business_plan.pdfIn PDF document text

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