Malicious PDF — malware analysis report

Static analysis result for SHA-256 80cd2c74e8ebd99d…

MALICIOUS

PDF

63.8 KB Created: 2020-08-07 20:55:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c061b1b10c2d83c1dab031d188799ba1 SHA-1: 4d5dc2806999bbe18a3704082c61016a10a9ef95 SHA-256: 80cd2c74e8ebd99d9bb12337b240b895f6313ed25b171b0a67b33f3fe1de6bc5
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The embedded URL 'https://ttraff.ru/pify?keyword=tube+digestif+histologie+pdf' is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other links, suggesting a lure to external malicious content. No scripts were extracted from this sample.

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=tube+digestif+histologie+pdf
    • http://files.granbygolf.com/uploads/1/3/1/8/131871614/wefozelonefep.pdf
    • http://files.flyfishingcoyhaique.com/uploads/1/3/1/4/131409009/jozunavuvel_gizadedunez_gutajosemele.pdf
    • http://files.achildsworldtherapy.com/uploads/1/3/1/6/131637308/bekemupezotisel.pdf
    • http://files.mindandhomeinsurance.com/uploads/1/3/1/6/131606046/dugutajuro_renirizogulod.pdf
    • http://rituwevaw.holisticlivingjourney.com/uploads/1/3/2/6/132681670/kiramumubobomaxov.pdf
    • https://cdn.shopify.com/s/files/1/0432/7102/8896/files/17315651032.pdf
    • https://cdn.shopify.com/s/files/1/0432/8315/3056/files/third_angle_orthographic_projection.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/widizosatadusuzovasovodas.pdf
    • https://cdn.shopify.com/s/files/1/0437/4410/0506/files/28042813443.pdf
    • https://cdn.shopify.com/s/files/1/0432/1165/3279/files/35073101432.pdf
    • https://cdn.shopify.com/s/files/1/0427/8249/0791/files/tamobutemore.pdf
    • https://cdn.shopify.com/s/files/1/0431/9451/5614/files/kupubo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6826/8456/files/elite_dangerous_how_to_change_hud_color.pdf
    • https://cdn.shopify.com/s/files/1/0436/4884/3929/files/nozowizijobodimoxuwibuf.pdf
    • https://cdn.shopify.com/s/files/1/0434/0219/9196/files/movie_themes_easy_piano.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_off0000a181.bin
0eac1552a6a0cc8d6d43e14f5c157d052ff2bf21460314f67a2c213e0a454e63
pdf-font-stream PDF embedded font (sfnt) at offset 0xA181 6744 bytes
font_01_sfnt_off0000b268.bin
3cf9e91df9709b17ee770e5138683e11402d70f19a5889a925fc3ca453b08573
pdf-font-stream PDF embedded font (sfnt) at offset 0xB268 5088 bytes
font_02_sfnt_off0000c3b9.bin
37a996e3474e10181b3e4404cd1410945504ebaa87299787ebac3c9af7f0fa7c
pdf-font-stream PDF embedded font (sfnt) at offset 0xC3B9 15000 bytes