Malicious PDF — malware analysis report

Static analysis result for SHA-256 48477dd1d316fe17…

MALICIOUS

PDF

31.3 KB Authoring application: Solid Converter PDF
MD5: a62010ee7e6747ef0c68dbb3a8b5adef SHA-1: 44eb51ceeaa84eeb0ebad3f0d32e4601e8ad6c8b SHA-256: 48477dd1d316fe174263ae9a9c72ebc7303fa9a6f983ecc941ff795714a5ee5c
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files hosted on unrelated domains. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 and the ML classifier output strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though containing technical text, also embeds these malicious URLs, reinforcing the attack pattern.

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 http://coachellascreenprinting.com/uploads/1/3/0/5/130539742/dederu.pdf
    • http://claycountyedc.com/uploads/1/3/0/3/130313340/waviwap.pdf
    • http://mimebulo.vernovelas.org/uploads/2020/01/28/4287c03c750c0.pdf
    • http://danishamericanheritagesociety.org/uploads/1/3/0/4/130476216/f453bf2a27e13a.pdf
    • http://nulitoje.moscowhome-realty.ru/uploads/2020/01/28/juweboduk.pdf
    • http://themathbutler.com/uploads/1/3/0/7/130775537/xivezogebivavukosere.pdf
    • http://pathblazer.org/uploads/1/3/0/6/130639205/52820.pdf
    • http://organicdabsnacks.com/uploads/1/3/0/6/130604140/debefubi.pdf
    • http://sweetpeawholesomebaby.com/uploads/1/3/0/5/130589402/4794492.pdf
    • http://miracleinabucket.com/uploads/1/3/0/6/130620637/130620637.html#kibana+query+syntax+cheat+sheet

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001207.bin
2463dda9b334fb8af0f09ba6095f4e9af4e84838e44d71a10373a8fb79a4a2d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1207 8528 bytes

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