Malicious PDF — malware analysis report

Static analysis result for SHA-256 685c5ff4cdd362f9…

MALICIOUS

PDF

6.6 KB Created: 2015-06-04 18:30:27 +04:00 Authoring application: DOMPDF First seen: 2015-06-23
MD5: eda3dba50bf56a1bf81963cbaa3675a4 SHA-1: 29f37fb2e55502f8b4c6182f0c8648aca512fce8 SHA-256: 685c5ff4cdd362f9cd6d5f488fa60f4b9b933b94879d2147b624146e87f96ddd
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, identified by the PDF_SEO_PHP_GATEWAY_LINK_FARM heuristic, directing users to various external websites. These links are disguised as content related to binary options trading and financial strategies, suggesting a phishing or SEO spam campaign. No scripts were extracted, and the document body primarily consists of obfuscated text and these links.

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://kayafestival.com/index.php?wiki/04/06/2015/gossip/no+1+binary+option+broker.pdf&ddcfy=1&news=210 In PDF document text
    • http://mottoagency.sg/index.php?wiki/04/06/2015/qreator/binary+option+strategies+qi.pdf&awxxu=1&news=1921In PDF document text
    • http://oilflux.com/index.php?wiki/04/06/2015/digidroid/binaryoptions.net.au.pdf&kclnt=8&news=753In PDF document text
    • http://darerteqa.com/index.php?wiki/04/06/2015/plineks/binary+brokers+sites.pdf&ougyk=1&news=350In PDF document text
    • http://canyoncoal.com/index.php?wiki/04/06/2015/serendibleisure/binary+option+application.pdf&tteow=1&news=2757In PDF document text
    • http://www.sasopapp.com/index.php?wiki/04/06/2015/gidonline/binary+options+website.pdf&nflvq=1&news=107In PDF document text
    • http://www.supermaraton.eu/index.php?wiki/04/06/2015/housepop/binaryoptionstradingguide.com.pdf&owutp=1&news=sitemapIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_000_off0000029e.js decompressed-pdf-stream PDF FlateDecoded stream at offset 0x29E 6906 bytes
SHA-256: 10b8838ef70d0b4def1cceef4d3bcedcb2807b5b6aeabf734832d161a5ebf94b

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