Malicious PDF — malware analysis report

Static analysis result for SHA-256 b09f8df703385ebb…

MALICIOUS

PDF

59.6 KB Created: 2020-08-08 11:21:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d420b7de721677011221143c75b2acd SHA-1: e019468d06751a0efaf9ba0bcf05f198d7591891 SHA-256: b09f8df703385ebb2ae1e33322d22f439b7b11dd7b492bdc8cf2ded790a98aee
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one heuristic specifically flagging it as a malicious redirector. The primary malicious URL identified is 'https://ttraff.ru/pify?keyword=bwv+131+pdf'. This suggests the document's purpose is to redirect the user to potentially harmful content or phishing sites. The presence of numerous links also indicates a potential SEO link farm tactic.

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=bwv+131+pdf
    • http://kotekov.wikigempedia.com/uploads/1/3/1/4/131406202/6326967.pdf
    • http://files.simicollins.com/uploads/1/3/0/7/130775977/baxanogagiwe_xapexide.pdf
    • http://files.scarboroughanimalhospital.com/uploads/1/3/1/0/131070493/3665045.pdf
    • https://cdn.shopify.com/s/files/1/0427/7560/9510/files/purafuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/0879/4525/files/62390273616.pdf
    • https://cdn.shopify.com/s/files/1/0428/5697/2455/files/ganovukutuxanuvilujotewes.pdf
    • https://cdn.shopify.com/s/files/1/0434/3057/6285/files/kovewuwenomizupepomoz.pdf
    • https://cdn.shopify.com/s/files/1/0439/8972/9438/files/aggregate_impact_test_is_code.pdf
    • https://cdn.shopify.com/s/files/1/0435/1482/2808/files/dynamic_arrays_c.pdf
    • https://cdn.shopify.com/s/files/1/0434/7274/8709/files/fipidudipeletito.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/57515970725.pdf
    • https://cdn.shopify.com/s/files/1/0440/0431/1190/files/66025177659.pdf
    • https://cdn.shopify.com/s/files/1/0440/0925/9158/files/bitumen_penetration_test_procedure.pdf
    • https://cdn.shopify.com/s/files/1/0431/3248/5793/files/half_elf_5e_variant.pdf
    • https://cdn.shopify.com/s/files/1/0437/6779/1765/files/90484628183.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_off000095d5.bin
022708cf509c1759f6945260cc0891f029c53dc6bdd6ffc15c4ed9e9573090bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95D5 4936 bytes
font_01_sfnt_off0000a6e8.bin
084f7ab98d8430774be8bba727748a86d8a6a29a25345e01949ead8789ca278b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6E8 11144 bytes
font_02_sfnt_off0000cc7d.bin
73e2bae015806fcbcea00a5e77fef36cf57312733aebee32ba98308b5ce41d75		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC7D 16120 bytes

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