Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2e397a571c19e24…

MALICIOUS

PDF

46.2 KB Authoring application: LibreOffice Draw
MD5: 134cca5f3d33e282d1130e9e5809ecb9 SHA-1: 74e212cf36214eb3f6fb0a74ef5a8c26ff3afa16 SHA-256: d2e397a571c19e24da38791bfdb3c7422ffb435725791b3923109dd0003e30fe
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDF files hosted on various domains. This behavior is indicative of a link farm or a phishing lure designed to direct users to malicious content. The document body, though partially corrupted, mentions 'Basel 2 operational risk events' and includes URLs, reinforcing the phishing pretext. The ClamAV detection and ML classifier further support the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://deluxehomestaging.com/uploads/1/3/0/2/130270941/227924.pdf
    • http://brickhouseroofing.com/uploads/1/3/0/6/130620689/c282b517.pdf
    • http://kenkeefe.com/uploads/1/3/0/6/130605335/nunoduzewupe_gowul_sudekifepavuzos_lafifuzogenebit.pdf
    • http://potusnewschannel.com/uploads/1/3/0/3/130379610/6ed49c746.pdf
    • http://mynaturalhairspa.com/uploads/1/3/0/3/130323163/130323163.html#basel+2+operational+risk+events

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001035.bin
9be57971904bf729d5e4af4a95387b8f03f4147a130530b0a5f8c3c7727d512c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1035 8296 bytes

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