Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f2290d1c93cb2ee…

MALICIOUS

PDF

49.6 KB Created: 2020-12-13 16:06:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 3e0550041732b82154f8914577db8bd5 SHA-1: 94c8b5b851eba958b95a899c6504f29a1146c61d SHA-256: 1f2290d1c93cb2eeb61c758a2b7744b2150c66b48f6888e7b99dcdf540174815
242 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many pointing to disposable hosting services, indicating a link farm designed for SEO manipulation and potentially phishing. One critical heuristic identified a link to known malicious redirector infrastructure, suggesting an attempt to lead users to malicious content. The ClamAV detection and ML classifier further support its malicious nature, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7360

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
  • 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.
  • 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.
  • 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://cctraff.ru/aws?utm_term=import+data+from+excel+sheet+in+uft In PDF document text
    • https://wanovupejofo.weebly.com/uploads/1/3/4/5/134580977/780d9ffc801.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383445/normal_5f9b0c586caec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367299/normal_5f90893d34b43.pdfIn PDF document text
    • https://ginadilu.weebly.com/uploads/1/3/4/7/134768391/tarez_jowetezubar_balinipo_ziviwef.pdfIn PDF document text
    • https://luvoseguz.weebly.com/uploads/1/3/4/6/134665560/muxekifaje.pdfIn PDF document text
    • https://gefosutobova.weebly.com/uploads/1/3/4/6/134647182/898058.pdfIn PDF document text
    • https://mizunawakore.weebly.com/uploads/1/3/1/4/131406356/22531c38.pdfIn PDF document text
    • https://piwazolobaki.weebly.com/uploads/1/3/4/7/134714131/3760198.pdfIn PDF document text
    • https://vexepediv.weebly.com/uploads/1/3/4/6/134668456/kepewozuwagelam-lafix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403683/normal_5fa578d6a65fa.pdfIn PDF document text
    • https://migobagola.weebly.com/uploads/1/3/4/8/134874333/3172353.pdfIn PDF document text
    • https://zazusixalug.weebly.com/uploads/1/3/4/4/134491239/mixidipetugixatuf.pdfIn PDF document text
    • https://gerugufudob.weebly.com/uploads/1/3/4/8/134869234/dagulideb-tizaziweg-pafakudun.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/soxiposujajuno.pdfIn PDF document text
    • https://s3.amazonaws.com/wovigebi/8536218783.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/oxford_word_skills_vk.pdfIn PDF document text