Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b8956ff0fb157d7…

MALICIOUS

PDF

29.8 KB Authoring application: Pdftk
MD5: aa98925ca99de30ff8f0fb854ff0b6c4 SHA-1: 7e0f28d22dece1363c4839fbc0d7b93808def2c5 SHA-256: 8b8956ff0fb157d71a0219d825f17d89450e5c8d1befe182d30ec56ce28148ab
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, for malicious content. The primary indicator is the 'PDF_SEO_LINK_FARM' heuristic, which identified a large number of external PDF links within the document. These links point to various domains, suggesting a coordinated effort to manipulate search engine results or distribute malicious payloads. The document body contains fragmented text and embedded URLs, further supporting the link farm activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://ruxenozekaxurup.weebly.com/uploads/1/3/0/2/130270893/7978116.pdf
    • http://rosamenta.com/uploads/1/3/0/5/130588328/merarugevam_pekaku_somefesif_mumirefe.pdf
    • https://futetekixokep.weebly.com/uploads/1/3/0/3/130323789/fivilekapudoxon.pdf
    • http://sek.vjclinicadentalfamiliar.com/uploads/2020/01/28/xixomatilurewiv-zifawud-diwof-pomos.pdf
    • https://rofigigesa.weebly.com/uploads/1/3/0/3/130323630/7481632.pdf
    • http://xalat24.ru/uploads/2020/01/27/tunop.pdf
    • http://pointguideconnect.com/uploads/1/3/0/5/130551366/9915403.pdf
    • http://novazaco.com/uploads/1/3/0/6/130604335/130604335.html#imperial+march+star+wars+mp3+download
    • http://novazaco

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000117a.bin
109ae352eca9fa6e8dd5720abe34985942d1fdd6a59af1c1fb2845ad82c79c59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x117A 8280 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.