Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0a702c1f8cff5b3…

MALICIOUS

PDF

48.4 KB Created: 2020-08-21 15:09:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3fb2054e0300d31a9300867e6886b92 SHA-1: ff62dbd7ea0ddc4298e0f291c444aed8cd8464ef SHA-256: c0a702c1f8cff5b35e603b86133206d953565798dec9379cc485c0b5baf2e2a3
150 Risk Score

Malware Insights

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

The PDF document was flagged as malicious by an ML classifier and contains a significant number of embedded links. One of these links, 'https://ttraff.ru/pify?keyword=krishna+bhagwan+ka+gana', points to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous other links, many hosted on Shopify, indicates a link farm designed to obscure the malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=krishna+bhagwan+ka+gana
    • http://files.motivationalmowing.com/uploads/1/3/2/7/132740586/kijuvezijodi-zogipuwi-varukixeboz-kulol.pdf
    • http://fuxopesi.americastrumpet.com/uploads/1/3/0/8/130874493/0d2a2af.pdf
    • http://files.transitionsthoroughbreds.org/uploads/1/3/1/1/131164112/b19f0.pdf
    • https://cdn.shopify.com/s/files/1/0432/9419/5870/files/altered_carbon_soundtrack.pdf
    • https://cdn.shopify.com/s/files/1/0432/9367/1588/files/43836540917.pdf
    • https://cdn.shopify.com/s/files/1/0430/5806/9655/files/68183292465.pdf
    • https://cdn.shopify.com/s/files/1/0434/7147/0742/files/ximuvisuguzipot.pdf
    • https://cdn.shopify.com/s/files/1/0428/1614/3526/files/ca_dmv_registration_renewal_form.pdf
    • https://cdn.shopify.com/s/files/1/0439/3422/0456/files/18082479905.pdf
    • https://cdn.shopify.com/s/files/1/0439/2137/5387/files/loudon_organic_chemistry_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0439/4608/2472/files/2309680782.pdf
    • https://cdn.shopify.com/s/files/1/0436/6820/9817/files/mafevox.pdf
    • https://cdn.shopify.com/s/files/1/0440/6899/5224/files/27691792286.pdf
    • https://cdn.shopify.com/s/files/1/0427/5830/8006/files/nefigijoxiferegebin.pdf
    • https://cdn.shopify.com/s/files/1/0434/4610/8312/files/kesimarugivexurer.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_off0000689b.bin
6bf44e337a8b3e3dcb887da34ab5c43f340dbe5d9e242683adc74f0713f5e34b
pdf-font-stream PDF embedded font (sfnt) at offset 0x689B 5180 bytes
font_01_sfnt_off00007a43.bin
76b5b1338e10b4ff97ec427ea2427006f418c2390a3661b0e3589d387b106354
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A43 14780 bytes
font_02_sfnt_off0000a8ea.bin
1932c56823088d929eef2de281a1da737e0764f7ee23f1cc6a3840e4ec9a5ea6
pdf-font-stream PDF embedded font (sfnt) at offset 0xA8EA 3056 bytes