Malicious PDF — malware analysis report

Static analysis result for SHA-256 cebef0160dc469fb…

MALICIOUS

PDF

43.9 KB Created: 2020-08-28 05:29:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65515d9659149b5253685e4ac1c58405 SHA-1: ab8534d0f0f1977e07bdb45cb1adfc2bb971ae83 SHA-256: cebef0160dc469fba922129a85a0be1bc4576286f256fa3e028a97c5a63d197b
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the critical heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The primary malicious URL is https://ttraff.ru/pify?keyword=toyota+4runner+1990+manual. While the document body contains garbled text, the presence of numerous embedded links, many pointing to Shopify domains, suggests a tactic to obscure the malicious redirector. The PDF_SEO_LINK_FARM heuristic further indicates a large number of external links, likely for SEO manipulation or to host further malicious content.

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=toyota+4runner+1990+manual
    • http://files.selapfp.org/uploads/1/3/1/4/131437775/kovijaz.pdf
    • http://files.okaypanic.ca/uploads/1/3/0/9/130969151/f6cec409bf50858.pdf
    • http://files.susangsterrett.com/uploads/1/3/1/3/131380476/441203.pdf
    • http://files.thefeltfactory.co.nz/uploads/1/3/0/7/130776841/xizixexa-dajawotubep-fekifomidele.pdf
    • https://cdn.shopify.com/s/files/1/0430/2536/7194/files/que_es_la_depresion_psicologia.pdf
    • https://cdn.shopify.com/s/files/1/0428/8544/7833/files/30469009747.pdf
    • https://cdn.shopify.com/s/files/1/0438/3319/6706/files/cvs_health_powerpoint_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/3525759614.pdf
    • https://cdn.shopify.com/s/files/1/0432/3901/4562/files/sample_rental_agreement_format_tamil_nadu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3030/6203/files/98013497306.pdf
    • https://cdn.shopify.com/s/files/1/0429/7595/3049/files/tesupafuviwumolowafinir.pdf
    • https://cdn.shopify.com/s/files/1/0439/7596/6878/files/turnigy_accucell_6_manual.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_off000067b5.bin
c1e8197a5c4d7a0f90d6f495c7ee841a0dfe92c44dfd16d2871c95402cd3ed75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67B5 5140 bytes
font_01_sfnt_off00007926.bin
5ffb0a9e338735e0b95c431c3be87b4fd2c9fea3dd2375d51d5c81a6ae0b422c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7926 12932 bytes

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