Malicious PDF — malware analysis report

Static analysis result for SHA-256 16fd8e42e802ff5d…

MALICIOUS

PDF

36.9 KB Created: 2020-03-07 11:02:17 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3b882a027d6cf3c6bbe0430e1673eb55 SHA-1: 87d82b145760e630655ac0628c3b74be85aeb221 SHA-256: 16fd8e42e802ff5d6fba6d9a645981fd3373a939a48915c755c25ca67f6faa49
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a screenshot lure, containing minimal text and a single image, designed to trick users into clicking embedded links. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a campaign to distribute malicious content or phish for credentials. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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 36 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://fergodwear.net/uploads/1/3/0/4/130476145/130476145.html#aegis+legend+mod+battery+low+protection
    • http://burgangt.com/uploads/1/3/0/4/130476054/kisenobud_fepugum_puwerojo.pdf
    • http://punkrockandpretty.com/uploads/1/3/0/2/130270931/4799758.pdf
    • http://thesugarlifeco.net/uploads/1/3/0/8/130814355/puwez_sesosowesoviwi_pusidovoxi_pefades.pdf
    • http://cultcom.ch/uploads/1/3/0/6/130621210/desamafekikul-zuviregunekuwa.pdf
    • http://www.rainextentions.com/uploads/1/3/0/8/130813866/tuxiwadafotiwe-giviputubemode.pdf
    • http://uclwomeninfinance.com/uploads/1/3/0/9/130969265/zitexolatonix.pdf
    • http://aestheticsplus.club/uploads/1/3/0/5/130588574/mekeviwaju_fojuker.pdf
    • http://opiniononline.net/uploads/1/3/0/3/130313605/fujenesopizutitifeti.pdf
    • http://www.revolutionipdesigns.com/uploads/1/3/0/6/130604742/2961645.pdf
    • http://bthebuyer.com/uploads/1/3/0/6/130639160/a7f194fcdb.pdf
    • http://midwestrepsales.com/uploads/1/3/0/5/130541351/jifokidisuvuz.pdf
    • http://romelocaltourguides.com/uploads/1/3/0/6/130603692/tezovenij-fenasuwu-kabigokimalidov-lavomiwagu.pdf
    • http://www.graywolfpestcontrol.ca/uploads/1/3/0/2/130289640/a392f.pdf