Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5d334e486e73b18…

MALICIOUS

PDF

58.9 KB Created: 2020-11-24 23:43:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1500a7c3e05b6fb1a6ef35733aa17e15 SHA-1: 4847b9d07a0b82b92286170262678558cc3132d0 SHA-256: e5d334e486e73b18b4a13d2bbf7fc842613f600b4763a7b3351281d0c790606e
154 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, identified as a link farm, suggesting a phishing or SEO manipulation tactic. The ClamAV detection and ML classifier further indicate malicious intent, likely related to phishing or delivering a trojan. No scripts were extracted, limiting the analysis of specific execution methods.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9216

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffi.ru/123?utm_term=rwby+beacon+initiation
    • https://tibiwurab.weebly.com/uploads/1/3/2/6/132695994/1399207.pdf
    • https://cdn-cms.f-static.net/uploads/4464530/normal_5fa85828e5c83.pdf
    • https://vidixudex.weebly.com/uploads/1/3/4/7/134774160/fewuravek_nosajal.pdf
    • https://cdn-cms.f-static.net/uploads/4375206/normal_5f9f2f8c74b23.pdf
    • https://fekalebewobazo.weebly.com/uploads/1/3/4/6/134668576/tuwulazedukovu.pdf
    • https://lutenidu.weebly.com/uploads/1/3/4/3/134398581/ganetojunotera.pdf
    • https://nedudefo.weebly.com/uploads/1/3/4/3/134389218/9455783.pdf
    • https://s3.amazonaws.com/wupixufekijax/exception_to_policy_memo_army_example.pdf
    • https://s3.amazonaws.com/busutafitufe/beauty_and_the_beast_movie.pdf
    • https://s3.amazonaws.com/perurulexi/data_analysis_presentation_ppt.pdf
    • https://s3.amazonaws.com/lirivugu/ferojoguribavadiwekize.pdf
    • https://uploads.strikinglycdn.com/files/622c7fd6-d514-4f9b-955c-0d98bd28f1ce/zisariniguxatozamome.pdf