Malicious PDF — malware analysis report

Static analysis result for SHA-256 eec5127c834ced28…

MALICIOUS

PDF

23.2 KB Created: 2020-04-10 17:47:25 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 1e7d3cc73bedb760c488c96257cafaec SHA-1: 0f7a8d16fda323f622719af56af2c80b80a8a02f SHA-256: eec5127c834ced280f6684a2649a32fcdd5b0a8f3dce111b8a50f208bcb72f95
112 Risk Score

Malware Insights

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

The PDF document is identified as an image-only lure, typical of phishing campaigns. It contains numerous external links, with a primary link pointing to a suspicious HTML file. The ML classifier strongly indicates maliciousness. The document body is heavily obfuscated but contains embedded URLs, suggesting the intent is to redirect the user to malicious content hosted on external domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 4

  • 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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 23 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://whistleworldwide.com/uploads/1/3/0/6/130620730/130620730.html#statistics+relative+frequency
    • http://lunaoutlet.com/uploads/1/3/1/4/131437464/3340828.pdf
    • http://mariettahometheater.com/uploads/1/3/0/5/130550847/pijon.pdf
    • http://bulldogsofsandiego.com/uploads/1/3/0/5/130551472/4114411.pdf
    • http://galsinstitute.org/uploads/1/3/0/2/130288341/469601.pdf
    • http://daddybabygirl.org/uploads/1/3/0/7/130739779/158d14.pdf
    • http://allquiltedtogether.com/uploads/1/3/0/6/130621457/44862cc356f1a.pdf
    • http://shiveringstringswest.com/uploads/1/3/0/6/130620472/vagutigagelari.pdf
    • http://csmx.info/uploads/1/3/0/8/130874320/tudoxomenimopegame.pdf
    • http://furrysmithlaw.com/uploads/1/3/0/6/130603959/3276698.pdf
    • http://nduboisphotography.com/uploads/1/3/0/7/130739200/51051.pdf
    • http://my420tins.com/uploads/1/3/0/2/130273578/4113212.pdf
    • http://carolynmayhew.com/uploads/1/3/0/3/130379514/butixu.pdf
    • http://makingcentsofitall.com/uploads/1/3/0/7/130739723/f434b5c67.pdf
    • http://brooksequipmentco.info/uploads/1/3/0/5/130550743/pivijonejag.pdf

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