Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f4ba7e4e468b465…

MALICIOUS

PDF

50.7 KB Created: 2020-08-26 15:10:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e1dbc3953d8d6b7800ddc5b4e8f68e3 SHA-1: 7bb704f25a5b6d8586173130610c2eeda19b1a7a SHA-256: 7f4ba7e4e468b4657814c3d54841711af17a45e107c18bcc306ca3a5389151ca
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to 'Attestation de prise en charge pour visa france pdf', suggesting a social engineering lure. The presence of a mass external PDF link farm further indicates malicious intent, likely to distribute further payloads or engage in SEO poisoning.

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.cc/pify?keyword=attestation+de+prise+en+charge+pour+visa+france+pdf
    • http://files.mixelle91.com/uploads/1/3/1/4/131454521/texekuzeza.pdf
    • http://files.inspiredcreationsbysky.com/uploads/1/3/0/7/130775284/ec3a9c11f.pdf
    • https://cdn.shopify
    • https://cdn.shopify.com/s/files/1/0439/7583/5806/files/2004_yamaha_v_star_650.pdf
    • https://cdn.shopify.com/s/files/1/0430/8670/8885/files/lexosotoravomezadul.pdf
    • https://cdn.shopify.com/s/files/1/0432/2492/4319/files/58785027370.pdf
    • https://cdn.shopify.com/s/files/1/0428/1778/1927/files/rock_pi_4.pdf
    • https://cdn.shopify.com/s/files/1/0430/3542/6970/files/rexobimiterezilololekoj.pdf
    • https://cdn.shopify.com/s/files/1/0432/2079/5556/files/8743621486.pdf
    • https://cdn.shopify.com/s/files/1/0441/1791/7848/files/senna_senokot_davis.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/85155057715.pdf
    • https://cdn.shopify.com/s/files/1/0437/8034/1917/files/tesaludakoxoviresomezabej.pdf
    • https://cdn.shopify.com/s/files/1/0434/5711/8374/files/steady_state_sinusoidal_analysis_using_phasors.pdf
    • https://cdn.shopify.com/s/files/1/0438/8107/0747/files/annulment_of_marriage_in_florida_forms.pdf
    • https://cdn.shopify.com/s/files/1/0447/0842/9977/files/hemiptera_families.pdf
    • https://cdn.shopify.com/s/files/1/0433/3705/6415/files/40462167459.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_off000082e0.bin
87930b629c2703de7e23cadc92cf32d993f6cf190de48fa15797d046940cfe31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82E0 5436 bytes
font_01_sfnt_off0000955b.bin
9e6053175062e6fe6c5ebccadabd8087e3f18da1160d2b5c1f6bc52edea0232f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x955B 12288 bytes

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