Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe053f7f277c9df4…

MALICIOUS

PDF

44.0 KB Created: 2020-08-18 15:13:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63bee891e1a8ab387a9a909fbb72d85e SHA-1: 7d47e3a4d84cab3a6cf4f608a3fac337cb508ed7 SHA-256: fe053f7f277c9df4af9d179c6f285c77b30c679554a123ab6b846a9130046b28
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, a technique often used for SEO poisoning or to redirect users to malicious sites. One critical heuristic identified a link to a known malicious redirector, ttraff.com, disguised as an 'invitation to tender'. The document body, though heavily obfuscated, contains this URL and other Shopify links, suggesting a lure to external content. No scripts were extracted, but the presence of malicious redirector links is a strong indicator of a phishing or malware distribution attempt.

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.com/pify?keyword=invitation+to+tender+template+building+works
    • http://files.naturalhealthhealinginstituteusa.com/uploads/1/3/2/6/132696214/9326525.pdf
    • http://files.razielleaigen.com/uploads/1/3/1/4/131454733/tanexajazi.pdf
    • http://files.trail-ology.com/uploads/1/3/0/8/130813827/c229c8f4.pdf
    • https://cdn.shopify.com/s/files/1/0438/6196/7013/files/94122216391.pdf
    • https://cdn.shopify.com/s/files/1/0432/3947/3314/files/nemegolot.pdf
    • https://cdn.shopify.com/s/files/1/0434/2684/0737/files/assessment_test_answers_for_dollar_general.pdf
    • https://cdn.shopify.com/s/files/1/0433/4606/7621/files/4368696457.pdf
    • https://cdn.shopify.com/s/files/1/0437/5727/3237/files/strength_of_materials_by_rk_rajput_free.pdf
    • https://cdn.shopify.com/s/files/1/0427/9648/2727/files/git_force_pull_overwrite.pdf
    • https://cdn.shopify.com/s/files/1/0431/9451/5614/files/business_statistics_in_practice_8th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/1509/3924/files/45252323339.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8853/files/natofiwalusi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0416/6297/files/zozezumonidemavifevux.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wabodenerevugibew.pdf
    • https://cdn.shopify.com/s/files/1/0449/4819/3439/files/medela_symphony_breast_pump_guide.pdf
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/kizijuzabenafetal.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c9d.bin
0d6b93a34ba042cc98edc9b80fbbb5dca6bbc348caf2efd2fc026de7f8b02231
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C9D 5572 bytes
font_01_sfnt_off00007f88.bin
5681a009a26b2c9c398ad98714d98133982a812ff8155949e2ad4d75379991f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F88 10228 bytes