Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec0701e9e1c58fdf…

MALICIOUS

PDF

25.8 KB Authoring application: Poppler-utils
MD5: 150a6f9f9d7d3e77dc081cec9fad6b5f SHA-1: 5fead7692450ee8835268d2de0962a713cb092bf SHA-256: ec0701e9e1c58fdfa7df28d196a657efb9044f21f891d1f143c7010f223ed8a2
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF document was flagged by ClamAV as Pdf.Phishing.TtraffRobotInstall-7605656-0 and a critical heuristic detected a large number of external PDF links, suggesting a phishing or SEO manipulation scheme. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the embedded URLs and the PDF structure point towards a delivery mechanism for malicious content.

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://tivipogux.weebly.com/uploads/1/3/0/5/130544413/nuzisoju.pdf
    • http://offthepier.net/uploads/1/3/0/5/130589133/munofufe.pdf
    • http://likenewelectronic.com/uploads/1/3/0/6/130621673/9453629.pdf
    • http://route66caps.com/uploads/1/3/0/5/130589214/bejerakeg.pdf
    • http://registrationdogpapers.com/uploads/1/3/0/5/130547999/zuvedidumalu_vamobemamopina_totopebeku.pdf
    • http://daradias.com/uploads/1/3/0/2/130289589/4059f.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001122.bin
ff51cfa8e7914abb3e015d5c162f8f181a4881cec5f87a56e1ce0308008673b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1122 8608 bytes

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