Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d8c6a13424ef031…

MALICIOUS

PDF

29.4 KB Authoring application: OpenOffice Draw
MD5: ae6dbbc886f46422728e545dc57a7431 SHA-1: 40e58efbc6584aaf13b3edf5ad6709f21bda15a1 SHA-256: 1d8c6a13424ef031b35a818a9d45017c526cdc876fe29dcd7d706125683939b7
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, which are designed to lure users into downloading further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically related to phishing and traffic redirection. The document body, though heavily obfuscated, contains references to movie downloads, aligning with the link farm's deceptive purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 http://datefame.com/uploads/1/3/0/6/130604140/41506816b0f5d63.pdf
    • http://cobratech.ru/uploads/2020/01/29/7218667.pdf
    • http://uvirtualcare.com/uploads/1/3/0/7/130738738/xunofaxamu-xebigusu-ripotoz.pdf
    • http://brilliantbusinesssolutionsllc.com/uploads/1/3/0/7/130740490/lupixojukawuxajesi.pdf
    • http://feardonald.com/uploads/1/3/0/3/130313057/4528af.pdf
    • http://blau-logistics.com/uploads/1/3/0/6/130639412/dd3b05f81.pdf
    • http://visionbystin.com/uploads/1/3/0/6/130621963/130621963.html#cartoon+movies++hd+720p

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010c7.bin
9bfcc1d705334e2451b81b0219913aa2fc3cc5daecec3debc20f5dedbc2a2a94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C7 7972 bytes

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