Malicious PDF — malware analysis report

Static analysis result for SHA-256 299b528f4d634a45…

MALICIOUS

PDF

43.2 KB Created: 2020-08-22 19:40:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9668883858feae337f97df753dd9dee8 SHA-1: c1d9eab0a3e09f6c3c9d57a96749c6ed90cc5507 SHA-256: 299b528f4d634a45e1d81ccdab8b33f9ccb5d2dba169931d28f4978f31a4abe4
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the document links to known malicious redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=scrabble+online+free+no++against+computer'. The document body, though heavily obfuscated, also contains this URL and numerous other Shopify-hosted PDF links, suggesting a link farm or SEO poisoning tactic to drive traffic to malicious sites. No scripts were extracted from this sample.

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=scrabble+online+free+no++against+computer
    • http://files.accordionapocalypse.com/uploads/1/3/0/9/130969422/8311375.pdf
    • http://xaluwixe.santanhistorical.org/uploads/1/3/1/6/131637881/1095661.pdf
    • http://files.sovietjewrymovement.org/uploads/1/3/1/3/131398561/tigip.pdf
    • http://files.hewittfarms.info/uploads/1/3/0/7/130776817/volajofopujabik.pdf
    • https://cdn.shopify.com/s/files/1/0429/0982/7231/files/99222048496.pdf
    • https://cdn.shopify.com/s/files/1/0432/5516/9182/files/quantum_mechanics_a_paradigms_approach.pdf
    • https://cdn.shopify.com/s/files/1/0437/7437/8138/files/2245994199.pdf
    • https://cdn.shopify.com/s/files/1/0431/4995/1138/files/manual_da_pedaleira_boss_me_25_em_portugues.pdf
    • https://cdn.shopify.com/s/files/1/0433/6222/2232/files/zobufevegisiwuxaxenij.pdf
    • https://cdn.shopify.com/s/files/1/0438/8097/2456/files/food_manufacturing_business_plan_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/0501/7255/files/template_ppt_lucu_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/0603/3063/files/50683446642.pdf
    • https://cdn.shopify.com/s/files/1/0432/8115/4198/files/aspergillus_niger_structure.pdf
    • https://cdn.shopify.com/s/files/1/0440/4012/6614/files/jenukiva.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/jirexozejelotip.pdf
    • https://cdn.shopify.com/s/files/1/0429/7916/4314/files/wupozo.pdf
    • https://cdn.shopify.com/s/files/1/0433/3862/9270/files/39643756356.pdf
    • https://cdn.shopify.com/s/files/1/0432/0319/9136/files/54934769616.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_off000068ca.bin
3a1063204c33bb66b04047021993396fcd1b8c9dee1a3aa3944188176b889c25
pdf-font-stream PDF embedded font (sfnt) at offset 0x68CA 5580 bytes
font_01_sfnt_off00007ba7.bin
e627f47da356190215f21ffcd2a5d39c68ad70666b68c9be4336bc462d96b46e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA7 10080 bytes