Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f3be421d45d50a7…

MALICIOUS

PDF

6.7 KB Created: 2015-06-04 18:29:29 +04:00 Authoring application: DOMPDF First seen: 2015-06-30
MD5: 853b250e325877d964382ac77e0edbf0 SHA-1: 4cdab07cccc41ef2c166335c4383434fa967a150 SHA-256: 0f3be421d45d50a796afd0806d649b91f0a31a112859fd79e6505209d165e044
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs that are part of a link farm, primarily advertising binary options trading. The heuristic 'PDF_SEO_PHP_GATEWAY_LINK_FARM' indicates this is likely an SEO spam or phishing attempt to drive traffic to these sites. While no scripts were explicitly extracted, the nature of the embedded links and the document body suggests a lure for financial scams. The ML classifier also flagged the document as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5034

Heuristics 2

  • PDF carries a PHP-gateway SEO-spam PDF link farm medium PDF_SEO_PHP_GATEWAY_LINK_FARM
    PDF contains four or more clickable links whose target is a `.php` gateway with a multi-word search-PHRASE document slug embedded after it (e.g. 'index.php?.../binary+options+trading+nz.pdf' or 'pdf.php/cialis-dosage-side-effects.pdf'). Legitimate PHP-served documents use a filename or numeric id, not a search-query phrase, so this is the generated SEO link-farm shape — pharma / binary-options / 'free download' spam that ranks for queries and routes users into payload/redirect chains. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://www.infinitywp.it/index.php?wiki/04/06/2015/turnout/binary+brokers+canada.pdf&cfaqc=1&news=1749 In PDF document text
    • http://pit-service.com.ua/index.php?wiki/04/06/2015/playhouse/binary+options+10+minimum+deposit.pdf&hochy=1&news=254In PDF document text
    • http://highlandsmommies.org/index.php?wiki/04/06/2015/degusto/binary+option+system+j25.pdf&qejwh=3&news=740In PDF document text
    • http://herbalshop.com.ua/index.php?wiki/04/06/2015/ephototheme/binary+option+in+malaysia.pdf&cahug=1&news=1296In PDF document text
    • http://darshopticians.com/index.php?wiki/04/06/2015/busscher/example+of+binary+options.pdf&arzur=1&news=2556In PDF document text
    • http://rafcar24.pl/index.php?wiki/04/06/2015/letizia/binary+option+usa.pdf&fnewq=1&news=2198In PDF document text
    • http://www.supermaraton.eu/index.php?wiki/04/06/2015/housepop/binaryoptionstradingguide.com.pdf&owutp=1&news=sitemapIn PDF document text