Malicious PDF — malware analysis report

Static analysis result for SHA-256 5db1e1e1d0ae340a…

MALICIOUS

PDF

78.1 KB Created: 2021-03-01 19:22:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: b0ee098910b9159d77db7fd4cfdb2b37 SHA-1: 888cce11bd56e5d8d87b9718916875e262522a21 SHA-256: 5db1e1e1d0ae340afb1cf4834c6d74759d496ad899616c51568d62549906bc77
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links, many pointing to disposable hosting services, indicating a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or distributing further malware. No scripts were extracted, but the structure itself is suspicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8962

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://xajibur.ru/strik?utm_term=woman+warrior+dc PDF link annotation
    • https://danexuxubusam.weebly.com/uploads/1/3/2/6/132695747/vajikot-birarimarab-zirakez.pdfIn PDF document text
    • http://zavupefedeba.22web.org/karp_dsc-_214m_cut_sheet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375200/normal_5ff7ea4fe9d7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414501/normal_600e6cc983d44.pdfIn PDF document text
    • https://nakaporona.weebly.com/uploads/1/3/1/4/131438848/5837545.pdfIn PDF document text
    • https://videtibap.weebly.com/uploads/1/3/2/6/132682663/0d2a9.pdfIn PDF document text
    • https://komimarokobak.weebly.com/uploads/1/3/4/6/134604519/f1d71ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383470/normal_602213a295874.pdfIn PDF document text
    • https://nuridofif.weebly.com/uploads/1/3/4/2/134234753/9467114.pdfIn PDF document text
    • https://fefajuvojamunuj.weebly.com/uploads/1/3/4/7/134750085/ferogunoxajakobul.pdfIn PDF document text
    • https://bisuxijux.weebly.com/uploads/1/3/5/3/135323954/c16f8592b80a82c.pdfIn PDF document text
    • https://rovalexi.weebly.com/uploads/1/3/4/5/134598456/bubugitovamaro.pdfIn PDF document text
    • http://depozamojazuj.22web.org/61505497811.pdfIn PDF document text
    • http://viniveba.mywebcommunity.org/xeludixosaroxanora.pdfIn PDF document text
    • https://sevenunoxesu.weebly.com/uploads/1/3/4/3/134341304/vezatevi.pdfIn PDF document text
    • http://ketorebagibof.22web.org/valokafadofij.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413705/normal_5fe39a9b120f6.pdfIn PDF document text
    • http://tuguwobafadurot.rf.gd/apex_legends_ps4_gre.pdfIn PDF document text
    • http://gulejarapexovut.epizy.com/milusopivudewakiraxi.pdfIn PDF document text

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