Malicious PDF — malware analysis report

Static analysis result for SHA-256 c75869bcabc80dcc…

MALICIOUS

PDF

34.5 KB Authoring application: OpenOffice Draw
MD5: 19249efbf4ee778f4a818afc96330696 SHA-1: 158113c6238214bd2fde8d9101cc1b98d06c4b60 SHA-256: c75869bcabc80dcca18f598f67efe441a04c0bfe620146d4b1b75f8573be2208
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. The 'PDF_SEO_LINK_FARM' heuristic specifically identified a large number of external PDF links within the document, suggesting a phishing or SEO spam campaign. The embedded URLs point to various domains, all likely serving malicious content or redirecting to further stages of an attack. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://jamesstreetselfstorage.com/uploads/1/3/0/8/130874095/lasid.pdf
    • http://untabvel.store/uploads/1/3/0/7/130776252/bidibuvevabivo.pdf
    • http://foilteeth.com/uploads/1/3/0/5/130589014/c748a0803.pdf
    • http://74-123-77-12.mgwnet.com/uploads/1/3/0/5/130589227/suruzaxejavavalifu.pdf
    • http://holypost.biz/uploads/1/3/0/7/130775921/sevororikivesu.pdf
    • http://richmond-math.com/uploads/1/3/0/5/130590496/426f28a6b6d0579.pdf
    • http://thumbderstruck.com/uploads/1/3/0/6/130604557/1525692.pdf
    • http://walrusartsandculture.com/uploads/1/3/0/7/130738850/wigib.pdf
    • http://coachdunlap.com/uploads/1/3/0/3/130323186/3412252.pdf
    • http://knoxfoodtours.com/uploads/1/3/0/5/130588164/fapozonixub_jibix_jokokikugevef.pdf
    • http://www.btwteambuilding.com/uploads/1/3/0/6/130620818/ronixe.pdf
    • http://palladiumhotel.devsite-1.com/uploads/1/3/0/5/130589031/130589031.html#xor+neural+network+matlab+code

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f5b.bin
5ab96e5906d856be438678a83ecb0ac3f8b5ddffcb767931e57ad4ff91635fc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F5B 8164 bytes

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