Malicious PDF — malware analysis report

Static analysis result for SHA-256 c59b950e9705e1a2…

MALICIOUS

PDF

43.3 KB Created: 2020-08-26 14:40:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4fcd1f52e45153b62c0a0ec08f976e77 SHA-1: 39b0a1535750af87b9e286d39643278a16dfd591 SHA-256: c59b950e9705e1a2dae25906bc372c45357c2ff077b53c567b64aee3a9df1762
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and text related to adult content, suggesting a lure. The PDF also contains a large number of external links, many pointing to Shopify, which is indicative of a link farm or SEO poisoning technique to improve search engine ranking for malicious content. 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.com/pify?keyword=witcher+3+yennefer+nude
    • http://files.twohawksfoundation.org/uploads/1/3/1/3/131398428/dimoxaj-jojutijev.pdf
    • https://cdn.shopify.com/s/files/1/0432/8344/7966/files/alfred_s_basic_piano_library_scales_chords_arpeggios_and_cadences.pdf
    • https://cdn.shopify.com/s/files/1/0434/5351/3893/files/zoxituwozitunosifade.pdf
    • https://cdn.shopify.com/s/files/1/0435/2393/2311/files/71588590439.pdf
    • https://cdn.shopify.com/s/files/1/0457/0808/3356/files/4731601919.pdf
    • https://cdn.shopify.com/s/files/1/0437/0091/2278/files/diablo_2_leveling_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/669297692.pdf
    • https://cdn.shopify.com/s/files/1/0431/6512/2720/files/nimexesavokawek.pdf
    • https://cdn.shopify.com/s/files/1/0431/9445/0078/files/birutanibugoj.pdf
    • https://cdn.shopify.com/s/files/1/0435/4647/6708/files/kolezemofuto.pdf
    • https://cdn.shopify.com/s/files/1/0437/3980/7893/files/psychology_exam_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0462/2024/7194/files/20810939133.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_off00006b93.bin
d0d304881ee40160176eebc3423622987acfef37a94f6a28c9a20f4c85f8dd28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B93 4968 bytes
font_01_sfnt_off00007c89.bin
5ffce4e7cb0f8f1169f1cc37cda75b86d1191f6a07413a80d9620b46e9b5e539		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C89 10396 bytes

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