Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec72fcb23f681fde…

MALICIOUS

PDF

29.1 KB Created: 2020-04-09 04:27:00 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 67dc0bdea6804f48d3fb0f415cb04b34 SHA-1: 8b79921b9e8173e307a52c702ef13fc90dbc2940 SHA-256: ec72fcb23f681fde092f12126345fdc6225829b778c949139522d3824e0e9a5e
82 Risk Score

Malware Insights

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

The PDF file is identified as an image-only lure, typical for phishing campaigns. It contains numerous external links, with a primary link pointing to a suspicious HTML file. The document body itself is heavily obfuscated but contains embedded URLs that are likely used to redirect the user to malicious sites. The presence of a link farm suggests an attempt to distribute malicious content or phish users across multiple domains.

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 29 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://virtue.coffee/uploads/1/3/0/2/130273812/130273812.html#cuales+son+los+3+tipos+de+saque+en+el+voleibol
    • http://uniquetaxi77.com/uploads/1/3/0/4/130490056/4601569.pdf
    • http://alliewojtaszek.ca/uploads/1/3/0/4/130476150/3653529.pdf
    • http://joncloudinc.com/uploads/1/3/0/3/130379426/7722167.pdf
    • http://lisahorowitztherapy.com/uploads/1/3/0/2/130271013/8875037.pdf
    • http://iantorrance.com/uploads/1/3/1/4/131454670/bf727.pdf
    • http://avididonline.com/uploads/1/3/0/6/130620412/b86de3e91c499.pdf
    • http://aristotleinvestments.net/uploads/1/3/1/4/131437241/4207637.pdf
    • http://fincadeya.com/uploads/1/3/0/6/130639373/4467297.pdf
    • http://sydneypacifictrading.com/uploads/1/3/0/4/130483697/netezopawuzo.pdf

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