Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc545b378b9df64b…

MALICIOUS

PDF

45.1 KB Authoring application: ImageMagick
MD5: 32528a72ef27f511420cbcd253a2239b SHA-1: 27b42450bbb1e88336f09324778c6f3232fffd14 SHA-256: bc545b378b9df64b9d1b586f13ad87d4f1b56a7b72e7949e71a15b6461c6e167
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The embedded URLs are the primary indicators of compromise, suggesting a redirection or phishing campaign.

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://10maincenter.com/uploads/1/3/0/4/130476873/pewasil.pdf
    • http://myspiritlevel.co.uk/uploads/1/3/0/6/130621784/9475166.pdf
    • http://cradlecoastocc.weebly.com/uploads/1/3/0/6/130605472/dafepejagodolaxax.pdf
    • http://myopoa.com/uploads/1/3/0/5/130543437/zanazebik.pdf
    • https://femapapupukoma.weebly.com/uploads/1/3/0/4/130435813/1c7e5e08873e0d.pdf
    • http://sonjalanehart.com/uploads/1/3/0/6/130622120/1333128.pdf
    • http://lisahatchmillinery.com/uploads/1/3/0/5/130545565/memuxot_falakekemixer_gopagovobogufiv.pdf
    • http://cyclebavaria.com/uploads/1/3/0/7/130776724/130776724.html#rectangular+waveguide+applications

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011aa.bin
50c871e3b24a5061b4fd15bdd398763578cddd13182d7ed305fdc712236a17fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11AA 8868 bytes
font_01_sfnt_off000074a0.bin
b6a24ed3b8dcc82fba4b23e0b129bd1bdb2b69fb44ecaf0534ae7b913aee1c1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74A0 3060 bytes

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