Malicious PDF — malware analysis report

Static analysis result for SHA-256 29ecab78a3d96022…

MALICIOUS

PDF

39.3 KB Created: 2020-08-14 05:10:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ba21fa0136ccca6c8940cad2c33bbe3 SHA-1: 108ca9f60631d46c448880f9b106608305867b64 SHA-256: 29ecab78a3d960221f86ca0103fa9a2d1793fa7a5cca9dc81eb6ae8c10dcbdea
120 Risk Score

Malware Insights

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

The PDF contains a heuristic match for PDF_MALICIOUS_REDIRECTOR_LINK, pointing to 'https://ttraff.ru/pify?keyword=metformin+er+half+life'. Additionally, PDF_SEO_LINK_FARM indicates a large number of external links, many hosted on cdn.shopify.com, suggesting a link farm or SEO poisoning tactic. The document body, though heavily obfuscated, contains the malicious URL and several other PDF links, reinforcing the lure. The primary intent appears to be redirecting the user to a malicious site.

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.ru/pify?keyword=metformin+er+half+life
    • http://files.greenkayla.com/uploads/1/3/0/7/130776204/miratemuw_kinojezinex_sipirefakas.pdf
    • http://files.heathrose.net/uploads/1/3/1/1/131164185/lipag-mavurat.pdf
    • http://dunufor.pandgdolls.net/uploads/1/3/0/7/130739415/ccc5a9.pdf
    • https://cdn.shopify.com/s/files/1/0430/2100/9053/files/63938071204.pdf
    • https://cdn.shopify.com/s/files/1/0434/8346/3832/files/8621750284.pdf
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/ansys_apdl_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/3242/0264/files/frequency_adverbs_exercises_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0438/2742/9536/files/45237754259.pdf
    • https://cdn.shopify.com/s/files/1/0433/7837/6867/files/dream_interpretation_john_paul_jackson.pdf
    • https://cdn.shopify.com/s/files/1/0433/3830/1594/files/ishakamusa_barashango.pdf
    • https://cdn.shopify.com/s/files/1/0436/5415/2342/files/46636168574.pdf
    • https://cdn.shopify.com/s/files/1/0437/3846/4405/files/artillery_weapons.pdf
    • https://cdn.shopify.com/s/files/1/0431/6105/9477/files/vebazaveditebam.pdf
    • https://cdn.shopify.com/s/files/1/0431/9903/7595/files/6298126065.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_off00005d84.bin
5f6251c69c93522985f076df056cb71d970670f3feb9e0fe4abeb57d8623096c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D84 4836 bytes
font_01_sfnt_off00006dca.bin
4f62504aaa9b267ea0d83dd69cf55288ddde9a065623f3e624b5fa6987ad016c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DCA 10196 bytes

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