Malicious PDF — malware analysis report

Static analysis result for SHA-256 c63b64c2224383ef…

MALICIOUS

PDF

45.6 KB Created: 2020-08-19 07:20:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5cacc7c224cd39d37a2f182661e3d8a8 SHA-1: a43a126cdd050812752e8ec0503d62ac7dae9c05 SHA-256: c63b64c2224383ef6b427321455525ffceb03b80996e0cfc7c142bc1909a30c7
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The primary malicious URL is https://ttraff.ru/pify?keyword=leg+pain+exercises+pdf, which is likely used to redirect the user to further malicious content. The document body, though heavily corrupted, contains the same malicious URL and appears to be a lure related to 'leg pain exercises'. 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.ru/pify?keyword=leg+pain+exercises+pdf
    • http://files.dry4u.com/uploads/1/3/1/4/131453256/nirusekajepurivi.pdf
    • http://files.bluezoneflanders.com/uploads/1/3/1/4/131453871/biroxojitow_pojid_kuporimusev_nifafotunukoku.pdf
    • http://files.cellar27furnitureco.com/uploads/1/3/0/7/130738841/muxusovikinipap.pdf
    • http://jodaw.joannegervais.net/uploads/1/3/0/8/130813478/2217103.pdf
    • https://cdn.shopify.com/s/files/1/0432/5546/4104/files/22648113842.pdf
    • https://cdn.shopify.com/s/files/1/0432/6775/2099/files/31501873145.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12247178291.pdf
    • https://cdn.shopify.com/s/files/1/0435/2635/7152/files/diablo_2_hd_patch.pdf
    • https://cdn.shopify.com/s/files/1/0434/1560/1319/files/podizuxelutinajuwow.pdf
    • https://cdn.shopify.com/s/files/1/0441/4255/9384/files/altistart_48_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/1236/6229/files/mitebiziguv.pdf
    • https://cdn.shopify.com/s/files/1/0440/4002/8325/files/prince_william_county_va_police_reports.pdf
    • https://cdn.shopify.com/s/files/1/0439/0476/2011/files/tikabosobulerojixu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1977/1799/files/best_sound_quality_android.pdf
    • https://cdn.shopify.com/s/files/1/0432/0516/5216/files/the_game_libro_baricco.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_off000068be.bin
b7992c48fdd44521234e9bbdcb082bdb6f0287df42ab38376f19f9ba902a7871
pdf-font-stream PDF embedded font (sfnt) at offset 0x68BE 4896 bytes
font_01_sfnt_off0000796d.bin
b641c637cf5127671071b5d8b3a576a51c2f4a25d295eda28491caaa0a119139
pdf-font-stream PDF embedded font (sfnt) at offset 0x796D 10012 bytes
font_02_sfnt_off00009bb1.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x9BB1 4324 bytes