Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8b13a2ddac15254…

MALICIOUS

PDF

40.7 KB Created: 2020-08-28 09:43:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a943c6f545c109db78be0e69344d79f6 SHA-1: e47cbe97f0161427958dc96ec7692623b3d41b0b SHA-256: e8b13a2ddac15254ec295e864f1c5e693e0ac29dff98f1eef411f3a5fe02e834
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to benign Shopify-hosted PDFs, likely to improve search engine ranking for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://ttraff.cc/pify?keyword=section+8+bible+pdf
    • http://files.elementaryschoolheads.org/uploads/1/3/0/7/130775830/vesetabe-damunofidix-bajiwivajiwofu.pdf
    • http://dulene.myscentsandessentials.com/uploads/1/3/1/3/131380480/geweso.pdf
    • http://files.projectdiverge.com/uploads/1/3/0/7/130739039/b832d60b.pdf
    • https://cdn.shopify.com/s/files/1/0434/1003/0748/files/ccna_cisco_certified_network_associate_study_guide_richard_deal.pdf
    • https://cdn.shopify.com/s/files/1/0435/6725/1617/files/approach_vs_method.pdf
    • https://cdn.shopify.com/s/files/1/0432/6057/5894/files/farmville_2_country_escape_prized_animals_guide.pdf
    • https://cdn.shopify.com/s/files/1/0446/8133/0841/files/ayyappa_swamy_telugu_songs.pdf
    • https://cdn.shopify.com/s/files/1/0430/4830/4797/files/fejamujukaleganudop.pdf
    • https://cdn.shopify.com/s/files/1/0435/3071/5288/files/jujil.pdf
    • https://cdn.shopify.com/s/files/1/0432/9403/2040/files/46247422371.pdf
    • https://cdn.shopify.com/s/files/1/0440/8963/9077/files/3896176179.pdf
    • https://cdn.shopify.com/s/files/1/0432/8567/6192/files/free_gold_in_war_robots.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005272.bin
2aa1396a313d3c99e7e602735d611662b16ed897dd78b51f53571b80072d9b97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5272 4888 bytes
font_01_sfnt_off00006318.bin
0d6e44189335b258d0bc1f1c604c4f2531507d46eda3ebb343e2caeea2b96dd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6318 10476 bytes
font_02_sfnt_off000086aa.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86AA 4324 bytes

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