Malicious PDF — malware analysis report

Static analysis result for SHA-256 c72abfdaf764020e…

MALICIOUS

PDF

42.7 KB Created: 2020-08-15 05:26:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 010eec6ff77d41ffc12825aa1df9e7f0 SHA-1: 38e1b165a9bf67037bb8d79c5b6ea5a0b4de9481 SHA-256: c72abfdaf764020e2a1c8e59c56385993ba307ba6780bbf740b88bbc3edbe123
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as user manuals, with the primary link redirecting to a malicious domain. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the malicious nature of the redirector. The ML_NYX_PDF_MALICIOUS score further supports the malicious classification. The document body contains the primary lure URL and several other PDF links, indicating a phishing or scam attempt.

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.com/pify?keyword=cyberpower+625va+user+manual
    • http://files.lowcarblife.club/uploads/1/3/1/4/131453998/podifepes.pdf
    • http://files.pray4oaxaca.com/uploads/1/3/1/4/131406840/2034712836d.pdf
    • http://files.andersonpurse.com/uploads/1/3/2/7/132740293/rosaloxigomizixiwipa.pdf
    • http://files.crossroadscommunicationsgroup.com/uploads/1/3/1/4/131454634/kuxezodum.pdf
    • https://cdn.shopify.com/s/files/1/0433/4845/9673/files/sedak.pdf
    • https://cdn.shopify.com/s/files/1/0440/1001/2837/files/mechanicus_painting_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/6838/3642/files/guziwexejavufir.pdf
    • https://cdn.shopify.com/s/files/1/0444/8750/8135/files/the_anatomy_of_revolution_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/5296/5792/files/tavavazo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0473/1300/files/30995184270.pdf
    • https://cdn.shopify.com/s/files/1/0431/3907/2161/files/87683599647.pdf
    • https://cdn.shopify.com/s/files/1/0438/4843/3829/files/novena_biblica_a_san_miguel_arcangel.pdf
    • https://cdn.shopify.com/s/files/1/0431/5004/9448/files/64338369543.pdf
    • https://cdn.shopify.com/s/files/1/0433/9384/3358/files/duzekeluwixuvapufuzuzebi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4367/5560/files/883453659.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/
    • https://cdn.shopify.com/s/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060a0.bin
86e44a0c37afc6ba524573f72fef4269434720e5832bc5a34fc76b4d9df2aaf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60A0 5676 bytes
font_01_sfnt_off000073ec.bin
23c1b92a3f14e62f57e455abb581ca9d8c704549ec9f8c4be6b0b287b75f6328		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73EC 13256 bytes

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