Malicious PDF — malware analysis report

Static analysis result for SHA-256 4274917deb4a206e…

MALICIOUS

PDF

67.6 KB Created: 2020-11-11 06:16:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 2b9a1c2bc7f48a6932ef6ea1f800ad4f SHA-1: 191019623b64d4990520a4faff91d88659267c35 SHA-256: 4274917deb4a206e7067bcc5f61e461763c79093936fc449349c8384be85655c
212 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous embedded links, many of which point to known malicious redirector infrastructure and link farms. The primary malicious URL identified is 'https://gettraff.ru/aws?keyword=desiserials+star+plus'. The presence of these links strongly suggests the document is designed to lure users to malicious sites, likely for phishing or to download further malware. The ML classifier and ClamAV detection further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/aws?keyword=desiserials+star+plus In PDF document text
    • https://kenilajapa.weebly.com/uploads/1/3/1/0/131069910/dfe5471fa8.pdfIn PDF document text
    • https://jazexupojofon.weebly.com/uploads/1/3/1/4/131409098/vamojidufubatanekuz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388416/normal_5f8f72746b1bb.pdfIn PDF document text
    • https://winomumamo.weebly.com/uploads/1/3/1/0/131070375/038b7.pdfIn PDF document text
    • https://tulejimukun.weebly.com/uploads/1/3/4/3/134399478/2528331.pdfIn PDF document text
    • https://fotejisatowonu.weebly.com/uploads/1/3/2/3/132302873/fezoguguboxavo.pdfIn PDF document text
    • https://lilawowawumoxo.weebly.com/uploads/1/3/1/4/131453384/fuxubebama_gunasewexabimo.pdfIn PDF document text
    • https://laxigozi.weebly.com/uploads/1/3/4/3/134361341/sewogopuruxagipo.pdfIn PDF document text
    • https://samomalekadoj.weebly.com/uploads/1/3/1/4/131438786/1933395.pdfIn PDF document text
    • https://tedinuvade.weebly.com/uploads/1/3/4/3/134348171/bonamab.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/71331347388.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/37048874135.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuzo/jaludotes.pdfIn PDF document text
    • https://s3.amazonaws.com/midipes/53957718011.pdfIn PDF document text