Malicious PDF — malware analysis report

Static analysis result for SHA-256 2665650fa3084d55…

MALICIOUS

PDF

63.1 KB Created: 2020-11-29 15:40:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: d9e149c9f6e46e6abd99b7fe0d3f7eaa SHA-1: 29a794ba2df916c18e7729fc8717231919cb861a SHA-256: 2665650fa3084d5597de163221c5d8bfa8275b78b8f1dedae415d25d2c895ab2
212 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file contains numerous embedded links, including a known malicious redirector and a link farm designed to direct users to potentially harmful content. The ClamAV detection and ML classifier further indicate malicious intent. The presence of embedded URLs suggests an attempt to lead the user to external malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8201

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://traffmen.ru/strik?utm_term=slue+foot+sue+story In PDF document text
    • https://nizesuvijeva.weebly.com/uploads/1/3/1/6/131607023/01d7af35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372673/normal_5f977c92970bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393036/normal_5fa2896a1bb50.pdfIn PDF document text
    • https://sibakixode.weebly.com/uploads/1/3/2/8/132814768/be9d745.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369786/normal_5f8865369f1da.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe092f86-ce7e-41eb-ab50-52caecfe2b23/skam_france_season_1_episode_5_english_sub.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/nufowepomuvulukor.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/amar_chitra_katha_stories_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5f2a46d-91e9-41a8-85cf-bf100ab1108d/79340387826.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/sezetufevakufu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f31e342-7332-4dfc-bae1-1c88e8585caa/caracteristicas_externas_delos_texto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5e644a4-1500-4b1b-abae-109c24c199f3/59115624021.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea3ace9d-8d56-449b-aba0-718b6861ccd9/civitavecchia_to_rome.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3335e5b7-6494-49d4-95c9-68cb403e6fe4/zidiwesumiwiz.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e355.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE355 4756 bytes
SHA-256: 14ab34c8d6a4d9aa5cd8a3a850ffffceecdb5c3e775f3bf5530933e06cbb54e2