Malicious PDF — malware analysis report

Static analysis result for SHA-256 b170d9dffe55b495…

MALICIOUS

PDF

25.4 KB Created: 2020-03-17 09:40:50 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 1d79786f968c2746216d092c299850ac SHA-1: c29fa0b682ab462d578f340100fdfec62e2dcd76 SHA-256: b170d9dffe55b49512a9a75271c186495cfaf5d5eed5aa8e8fc762170bd69e4e
112 Risk Score

Malware Insights

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

This PDF document is identified as malicious by an ML classifier and exhibits characteristics of a phishing lure. The PDF_IMAGE_LURE heuristic indicates it's an image-only document with an action trigger, designed to look like a screenshot. The PDF_SEO_LINK_FARM heuristic reveals a large number of external links, suggesting a link farm or redirection mechanism. The primary URL http://foreignatives.store/uploads/1/3/0/6/130621782/130621782.html#enlaces+covalente+ionico+y+metalico+ejemplos is likely the initial point of contact for the attack, potentially leading to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 25 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://foreignatives.store/uploads/1/3/0/6/130621782/130621782.html#enlaces+covalente+ionico+y+metalico+ejemplos
    • http://heinslpinc.com/uploads/1/3/0/9/130969659/5130809.pdf
    • http://webdisk.ruandehart.com/uploads/1/3/0/4/130435672/f845c035bd2.pdf
    • http://kelbels.org/uploads/1/3/0/6/130604010/5127a332dc6c941.pdf
    • http://www.concretevines.ca/uploads/1/3/0/4/130476318/5de391450.pdf
    • http://globaloffensivenades.com/uploads/1/3/0/3/130379254/0367ff438a5.pdf
    • http://ketocoacher.com/uploads/1/3/0/3/130379814/vurosew.pdf
    • http://davidbethke.com/uploads/1/3/0/6/130620849/wowan_merabalum_fegeveg.pdf
    • http://miraclestshirts.com/uploads/1/3/0/5/130539676/fezimiletizenir.pdf
    • http://jobson33.com/uploads/1/3/0/6/130605373/8733681.pdf
    • http://comecleandetail.com/uploads/1/3/0/2/130270855/6875819.pdf
    • http://ecrinsapartment.com/uploads/1/3/0/6/130639746/xoduledi.pdf
    • http://rivalrygraphics.com/uploads/1/3/0/3/130323115/1123979.pdf
    • http://buzzlysocialmedia.com/uploads/1/3/0/3/130313356/aacbb416937db.pdf
    • http://thedetailsvac.com/uploads/1/3/0/6/130621075/5583d8ebbb0b.pdf
    • http://noonsknives.com/uploads/1/3/0/3/130313686/zijepepuvaju.pdf
    • http://lampeelife.com/uploads/1/3/0/5/130542734/66ea21.pdf
    • http://mystarcleaner.com/uploads/1/3/0/7/130740087/vojodenuvulomixa.pdf