Malicious PDF — malware analysis report

Static analysis result for SHA-256 3008b095e51de509…

MALICIOUS

PDF

40.2 KB Created: 2020-09-01 13:01:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a7fccf7f581bdadd0008061eaab00885 SHA-1: 7428c66a4b324a74c6e243edd9c64cafb4f9a057 SHA-256: 3008b095e51de509f86fcfcfb78bd44d793c564d9675ce44872d3398c73e058e
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=2019+calendar+south+africa+excel'. This URL is presented within the document body, suggesting a social engineering lure to trick users into clicking. The PDF also contains a mass external PDF link farm, with many links pointing to Shopify domains, though the primary malicious link is the redirector. The ML classifier strongly supports the malicious nature of this PDF.

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.me/wix?keyword=2019+calendar+south+africa+excel
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/febomukove.pdf
    • https://cdn.shopify.com/s/files/1/0431/6794/0765/files/flir_tools_templates.pdf
    • https://cdn.shopify.com/s/files/1/0432/0952/3355/files/30121613090.pdf
    • https://static.usrfiles.com/ugd/5b9a87_f29a5be6367448af83c3a537f51963c1.pdf
    • https://static.usrfiles.com/ugd/b8c837_179209e83ce24ee09f428c79ba82157d.pdf
    • https://static.usrfiles.com/ugd/f6a907_e7a6b192a3c946e5b93f1323b759f4d7.pdf
    • https://static.usrfiles.com/ugd/1cc7e8_09af97549fc144b3bb9f899dd9d092c9.pdf
    • https://cdn.shopify.com/s/files/1/0434/7602/5501/files/skate_3_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/4026/8711/files/1817675113.pdf
    • https://cdn.shopify.com/s/files/1/0431/3314/1146/files/wugewore.pdf
    • https://cdn.shopify.com/s/files/1/0435/8992/7067/files/64267855058.pdf
    • https://static.usrfiles.com/ugd/eb6612_4ac407f134644401ac3af56ad5a747df.pdf
    • https://static.usrfiles.com/ugd/9421c8_51d40d98f0f243adb7f588807f2f6138.pdf
    • https://static.usrfiles.com/ugd/d1c05f_5b75c228b1a54713a3a7344987b83f7c.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_off00005d00.bin
ed02325c5eddd30c82262d366518c42da008741d9454a4edaff7858cc50e3eb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D00 5564 bytes
font_01_sfnt_off00006fe9.bin
42e54c2cbd8793b2b0b30738dc3b747da78f762db40ea07f0208ea47a7ac3669		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE9 11012 bytes

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