Malicious PDF — malware analysis report

Static analysis result for SHA-256 3996dd484a9c69cf…

MALICIOUS

PDF

19.2 KB Created: 2020-04-07 09:28:25 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ae82f86e9af405cd02c8fa7b292b4efa SHA-1: 7212c6a47aab36ab10921ee6fb81d2693fee2ffd SHA-256: 3996dd484a9c69cf0bb261980dd41e280c51f198c0273652a95cf8ae3dab3388
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, with the primary one pointing to a file named 'assassin's creed 4 trainer 1.07', suggesting a lure for game-related cheats or cracks. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains the primary URL and other similar URLs, reinforcing the phishing or malware distribution intent.

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 19 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://oscarthedumpertruck.com/uploads/1/3/0/4/130483428/130483428.html#assassin%27s+creed+4+trainer+1.07
    • http://marchenoir.ch/uploads/1/3/0/5/130550665/pigubowureji.pdf
    • http://prideshirtsca.com/uploads/1/3/0/4/130489830/503c49dc.pdf
    • http://powdercoatprosnd.com/uploads/1/3/0/5/130550813/24a9fde2.pdf
    • http://aparentsbestsummer.com/uploads/1/3/0/6/130604795/gavukuvalelupapagiz.pdf
    • http://kalispellnazarene.org/uploads/1/3/1/3/131379392/3066733.pdf
    • http://the-art-of-composition.com/uploads/1/3/0/6/130604581/fakuvimatuze.pdf
    • http://dds-staffing.com/uploads/1/3/1/4/131406658/wijomebadilopinisika.pdf
    • http://cloud9games.net/uploads/1/3/0/2/130287837/a74ab3e.pdf
    • http://fromshiptoshape.net/uploads/1/3/0/4/130477346/9dfdb403e8ddc.pdf
    • http://mygcrf.com/uploads/1/3/0/6/130639824/9614010.pdf
    • http://alicehickeyvo.com/uploads/1/3/0/8/130813366/bf4b06a.pdf
    • http://intimatesmallweddings.com/uploads/1/3/0/4/130477083/3353563.pdf
    • http://acresbaking.co/uploads/1/3/0/7/130776818/butifojibo_fibemefufovitav_dokunemanazus.pdf
    • http://kaylebrollins.com/uploads/1/3/0/9/130969895/4759680.pdf

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