Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc2bcfc56b52530a…

MALICIOUS

PDF

27.6 KB Created: 2020-04-04 11:59:08 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9df54a5c54ae659fc09a036540f6dcad SHA-1: 1ec71426a99b391d19f99c12fddf014394fffa29 SHA-256: dc2bcfc56b52530a8de45488162bba4812c13c0e26137cd8ee11dff450838d67
112 Risk Score

Malware Insights

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

The PDF is identified as an image-only lure, typical of phishing campaigns. It contains numerous external links, suggesting a link farm or redirection mechanism. The primary URL, http://brandinfrancis.com/uploads/1/3/1/4/131438113/131438113.html#factores+que+afectan+el+microentorno+de+una+empresa, is likely the initial landing page for the attack. No scripts were extracted, but the structure and heuristics strongly indicate a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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 27 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://brandinfrancis.com/uploads/1/3/1/4/131438113/131438113.html#factores+que+afectan+el+microentorno+de+una+empresa
    • http://commonplaceconsulting.com/uploads/1/3/0/4/130478481/4303269.pdf
    • http://actifystrategies.com/uploads/1/3/0/7/130739340/7207365.pdf
    • http://guttersystemsmichigan.com/uploads/1/3/0/6/130604537/nufamure_zuxifujuvozi_walezigabibali.pdf
    • http://michellepetersjones.com/uploads/1/3/0/4/130488067/66b4f87ac.pdf
    • http://roadadventures.net/uploads/1/3/0/7/130775950/8640996.pdf
    • http://myagconline.com/uploads/1/3/0/7/130739508/bbb8c.pdf
    • http://synergyperformanceimprovement.org/uploads/1/3/0/5/130588723/malexuri.pdf
    • http://johnnywilliamson.us/uploads/1/3/0/7/130776599/c4828def20a.pdf
    • http://jeffreysant.com/uploads/1/3/0/6/130603832/8523425.pdf
    • http://aglcap.com/uploads/1/3/0/2/130270855/9214626.pdf
    • http://mail.uvctechltd.com/uploads/1/3/0/7/130775297/wabolasuba_fuwox_tatubiwoz_jivagafitup.pdf
    • http://sfasts.net/uploads/1/3/0/2/130287839/rabazalunixu.pdf
    • http://iscebsga.com/uploads/1/3/0/5/130590654/2504430.pdf
    • http://springcleaningservices.info/uploads/1/3/0/4/130476078/debari_pavunoto_giwawilitov_mokuji.pdf
    • http://glidewheels.com/uploads/1/3/0/6/130620653/kovarupuwedewade.pdf

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