Malicious PDF — malware analysis report

Static analysis result for SHA-256 a96f59c5a5663c1d…

MALICIOUS

PDF

40.3 KB Created: 2020-08-24 19:52:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b107ad3387ed2ed1147ce45326500bd3 SHA-1: ec6d53e510b324c12557053a9ba52e50340156ef SHA-256: a96f59c5a5663c1d9aa31de880ee4f2710daf12198369257667e5ff18283f831
150 Risk Score

Malware Insights

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

This PDF file contains a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final destination of the malicious payload. The document body contains a search query for 'o saki saki song video mp4' which serves as a lure. The PDF also hosts a large number of external links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic to improve search engine visibility for malicious content. The ML classifier strongly flagged this PDF as malicious.

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.com/pify?keyword=o+saki+saki+song++video+mp4
    • http://duripe.stmichaelscustomrosaries.com/uploads/1/3/1/4/131482853/fe9206.pdf
    • http://files.moellermasel.com/uploads/1/3/0/7/130775635/bec60.pdf
    • http://files.mc-physics.com/uploads/1/3/1/4/131453031/d674b6ef52.pdf
    • https://cdn.shopify.com/s/files/1/0431/1583/9645/files/kwsp_contribution_table_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/8898/6787/files/rabepezox.pdf
    • https://cdn.shopify.com/s/files/1/0431/2141/0210/files/56173007886.pdf
    • https://cdn.shopify.com/s/files/1/0434/5580/7650/files/us_passport_application_form_usps.pdf
    • https://cdn.shopify.com/s/files/1/0432/8564/3420/files/adverbs_of_frequency_multiple_choice_test.pdf
    • https://cdn.shopify.com/s/files/1/0433/1087/4777/files/xikonavawivuluworarapog.pdf
    • https://cdn.shopify.com/s/files/1/0432/4818/9603/files/sisemekabeforidenavo.pdf
    • https://cdn.shopify.com/s/files/1/0439/1688/6184/files/jeruzotetofulu.pdf
    • https://cdn.shopify.com/s/files/1/0436/6693/1862/files/faserolenidutu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/kodugirod.pdf
    • https://cdn.shopify.com/s/files/1/0440/0375/4142/files/barking_dog_exeter.pdf
    • https://cdn.shopify.com/s/files/1/0438/3929/1554/files/musipixivibixisimuj.pdf
    • https://cdn.shopify.com/s/files/1/0432/1683/0632/files/barney_stinson_playbook_trke.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_off00004497.bin
06795f1fb84dd69f5b1a5e858c0c6de1ad4022b89d50d61d06af77a1a87ce6bb
pdf-font-stream PDF embedded font (sfnt) at offset 0x4497 5388 bytes
font_01_sfnt_off000056e5.bin
d8fe8e5f1c330464edc1e2bbd0c1adf0f6348a325ae8390d8de65c6c72fc95c1
pdf-font-stream PDF embedded font (sfnt) at offset 0x56E5 9248 bytes
font_02_sfnt_off000076d5.bin
e58e8e8d3617fa2f52d62469859eb662c26c1c1537dc21f5cc6f1aa71eaa6aed
pdf-font-stream PDF embedded font (sfnt) at offset 0x76D5 18776 bytes