Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1d1eaf93e0e1833…

MALICIOUS

PDF

39.6 KB Created: 2020-09-03 18:39:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bde40b5c39c369ae4d533ed908d59ea9 SHA-1: 2179f0ccc9cda42dedf70c122b2fc2d9bf013940 SHA-256: b1d1eaf93e0e18334f07be5c63fa805ff9060467911a03a070d9501c86e1753b
150 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.club/wix?keyword=raju+bhai+movie+songs++sensongs'. This indicates an attempt to redirect the user to potentially harmful content under the guise of providing movie songs. The document body, though heavily obfuscated, also contains this URL, reinforcing the lure. The presence of numerous other PDF links, while some are benign, suggests a link farm tactic to obscure the malicious destination.

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.club/wix?keyword=raju+bhai+movie+songs++sensongs
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/75815848510.pdf
    • https://cdn.shopify.com/s/files/1/0436/9242/5384/files/jadepasibejarameditekuges.pdf
    • https://cdn.shopify.com/s/files/1/0429/7100/5082/files/1047127535.pdf
    • https://cdn.shopify.com/s/files/1/0435/8458/5883/files/77474592021.pdf
    • https://cdn.shopify.com/s/files/1/0433/7437/9173/files/gofuvufodibuwelevol.pdf
    • https://static.usrfiles.com/ugd/eda9ba_ef707ad4751d454d8824e7f1b9701687.pdf
    • https://static.usrfiles.com/ugd/8c7d07_9378c112daee4891bd22fe17195a9393.pdf
    • https://static.usrfiles.com/ugd/b8c837_935befbbf7d64a2d8de46330d9683fb4.pdf
    • https://static.usrfiles.com/ugd/61f964_bd76b88bb34f44bdb77fc701e4575c0f.pdf
    • https://static.usrfiles.com/ugd/c722c2_8c083bbfd20a4482875691b7a33b703c.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_off00004fde.bin
a93e8d6f749ab8893d363729857a75c00a4874721d2038f7ca1c3a6a162f19cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FDE 5256 bytes
font_01_sfnt_off000061ac.bin
a81f72e1473142e507683c060f7690ae218dafba578619d26ec928d56bd3d89e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61AC 14892 bytes

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