Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1f68b1398c94718…

MALICIOUS

PDF

40.5 KB Created: 2020-08-29 22:42:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ca34449288c3fbc8cac8393961dc373 SHA-1: 541aa2b81df8d0c022858619935fee7de420bce8 SHA-256: e1f68b1398c94718783b0b1865b0b1beb01bebf9086a3d6fd76caede3b1fed5c
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a tactic to distribute malicious content or engage in SEO manipulation. The primary malicious URL identified is https://ttraff.com/wix?keyword=corte+bob+recto. 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.com/wix?keyword=corte+bob+recto
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/79469004333.pdf
    • https://cdn.shopify.com/s/files/1/0431/3609/0273/files/been_together_latest_version_apk.pdf
    • https://cdn.shopify.com/s/files/1/0428/6644/2406/files/42109658058.pdf
    • https://cdn.shopify.com/s/files/1/0439/3277/8651/files/ufw_port_forwarding.pdf
    • https://static.usrfiles.com/ugd/ea2f88_78a4002a6c4843f8876957b1002caa38.pdf
    • https://static.usrfiles.com/ugd/b8c837_8ffb51f4d6df4c81883c0a56039f58f7.pdf
    • https://static.usrfiles.com/ugd/b8c837_5081172ece1e4796955af9159a41e5d9.pdf
    • https://static.usrfiles.com/ugd/b8c837_72114670a1974d5293f12dccec51f90e.pdf
    • https://static.usrfiles.com/ugd/b8c837_84e7eea281714fa3a1c0a06a05a3401c.pdf
    • https://static.usrfiles.com/ugd/b8c837_ec75e064e67140e6a819ade02fb77d06.pdf
    • https://static.usrfiles.com/ugd/b8c837_fb7f2479483b46509ae1b8bf42284415.pdf
    • https://static.usrfiles.com/ugd/b8c837_aebd56061cf64bf98013acd197d1286d.pdf
    • https://static.usrfiles.com/ugd/2274a7_bc91b7e088124d63ac488e72fe69a7aa.pdf
    • https://static.usrfiles.com/ugd/b8c837_ed579ad385854d5c88d434ac03084648.pdf
    • https://static.usrfiles.com/ugd/b8c837_ee60ffe794b9420398a5a1d2f0fbddd4.pdf
    • https://static.usrfiles.com/ugd/76156b_c22e4afdaf7041369544359fbc6f6c85.pdf
    • https://static.usrfiles.com/ugd/b8c837_f29b2a0d105f4ecba9aed31dac4f6fbc.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_off000064dc.bin
38188a1b66181a6b45e7be7c504fca9edc5b20dc7b1b936d8b50823d844f6c3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64DC 4420 bytes
font_01_sfnt_off000073ee.bin
316894bdd22db22cdc3f1b8f80fdb585365728640d82f9004f57957dcd9d4873		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73EE 9848 bytes

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