Malicious PDF — malware analysis report

Static analysis result for SHA-256 5959ede42a8a418e…

MALICIOUS

PDF

49.5 KB Created: 2020-08-19 04:45:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64135aa6c7210c075d02c0dc7c7d04f8 SHA-1: e4a8905fe23fcd6deb931f8c0188762749046b3e SHA-256: 5959ede42a8a418e446669bbae20ebaf84ffad8523fddf44c5b78559baf29dca
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 identified a link to a known malicious redirector, ttraff.ru, which is likely used to obscure the final malicious destination. The document body, while containing garbled text, also includes the same URL, reinforcing the malicious intent. The presence of numerous links suggests a link farm or SEO poisoning tactic to attract victims.

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=championship+manager+2005+free
    • http://files.norcalstma.org/uploads/1/3/0/7/130775828/3594297.pdf
    • http://xubogi.travellingscot.co.uk/uploads/1/3/0/8/130874359/1428536.pdf
    • http://files.prime-peak.com/uploads/1/3/0/7/130775518/jibasaj_kaluwoje_nagop_fakeremuv.pdf
    • http://files.concordlawncareservices.com/uploads/1/3/1/4/131438616/mimaxitipati.pdf
    • https://cdn.shopify.com/s/files/1/0437/8476/5602/files/aviation_safety_audit_checklist.pdf
    • https://cdn.shopify.com/s/files/1/0438/9945/3608/files/veterinary_microbiology_book.pdf
    • https://cdn.shopify.com/s/files/1/0437/5045/7505/files/cbr_test_procedure_for_soil.pdf
    • https://cdn.shopify.com/s/files/1/0431/0656/6306/files/32392820730.pdf
    • https://cdn.shopify.com/s/files/1/0435/4356/0351/files/caltrans_traffic_safety_systems_guidance.pdf
    • https://cdn.shopify.com/s/files/1/0431/4100/5480/files/420841164.pdf
    • https://cdn.shopify.com/s/files/1/0436/0133/0339/files/que_es_el_catecismo_de_la_iglesia_catolica.pdf
    • https://cdn.shopify.com/s/files/1/0429/1241/5907/files/84474981048.pdf
    • https://cdn.shopify.com/s/files/1/0449/0412/0475/files/sades_902_drivers.pdf
    • https://cdn.shopify.com/s/files/1/0433/1814/9285/files/45673970220.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_off000080d5.bin
01bfd84cb04db5a2fdfd84b1af8efe591dd7db801d23dbecf46f3f66b4b2bfb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80D5 5588 bytes
font_01_sfnt_off000093b4.bin
525a982f0d266b36d9360baca05fe119bd0f1b6e728ed2365e8f07c6c9fc08e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93B4 11360 bytes

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