Malicious PDF — malware analysis report

Static analysis result for SHA-256 be704b24441506fb…

MALICIOUS

PDF

48.6 KB Created: 2020-09-02 17:50:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b11228afa84eaf21ffb3509e59afb0ed SHA-1: d192acb6f99dbecef3a1d11f849c98d6ce9ea15b SHA-256: be704b24441506fb41c528d22b6f95e08163ecde226b4332de058224e4cb38b3
150 Risk Score

Malware Insights

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

The PDF document contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link leads to a URL that is part of a link farm, suggesting a phishing or malicious redirection attempt. The ML classifier also strongly flagged this PDF as malicious. 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.link/wix?keyword=les+animaux+fantastiques+livre+pdf
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/22998480853.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/70298714892.pdf
    • https://cdn.shopify.com/s/files/1/0433/6943/1189/files/15948245493.pdf
    • https://cdn.shopify.com/s/files/1/0432/0903/1840/files/97597618022.pdf
    • https://cdn.shopify.com/s/files/1/0437/0595/8553/files/create_folder_python.pdf
    • https://static.usrfiles.com/ugd/0010c8_5f8b5c5b9bdb460bb44eb14b89865505.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/30553092986.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8360/files/91997127201.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rijakilijupefiwopoxafeza.pdf
    • https://cdn.shopify.com/s/files/1/0464/6748/1752/files/benim_hocam_corafya_konu_anlatm.pdf
    • https://static.usrfiles.com/ugd/d1c05f_86cd7fc7601149fd9ec6e4248696cdb2.pdf
    • https://static.usrfiles.com/ugd/4b874d_9adf58eb2a514292903c434c06aa1eaf.pdf
    • https://static.usrfiles.com/ugd/b8c837_d67cc1a50274440aa9e2f9275bacda63.pdf
    • https://static.usrfiles.com/ugd/0bcf16_ecf298ef73fd4e638c8a66084d84e2bc.pdf
    • https://static.usrfiles.com/ugd/bae363_a5d2f20ea15247fe906e30c5a6beae3e.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_off00007ab9.bin
dcc08c4bfe6d526cc3a06fea204a365d46c37ad3ba1e1ac9198ff87f808978da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB9 5380 bytes
font_01_sfnt_off00008cff.bin
04bea77178828a14b9a554bfd5e628edbe6b3e84afa00c79b15cc639c1e9b707		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CFF 12356 bytes

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