Malicious PDF — malware analysis report

Static analysis result for SHA-256 94210ab91cce8524…

MALICIOUS

PDF

43.4 KB Created: 2020-08-29 07:46:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02d9306b1823cd1babdb8460eed5f910 SHA-1: 2fd1a69ccbc5be9e4e6cea6ace78e1ded8ef11d5 SHA-256: 94210ab91cce8524fe0d983429c42bc69b2629c4a7c41a5c65a0489aa766e1ea
150 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to trick the user into clicking it. The presence of a link farm heuristic further supports the malicious intent of directing users to external sites.

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/wix?keyword=prodigy+hnic+torrent
    • https://static.usrfiles.com/ugd/b8c837_60f50ed93d754c9d8584e95cac9943a1.pdf
    • https://static.usrfiles.com/ugd/b8c837_b14ac01744ac4054ac8f87039d64a356.pdf
    • https://static.usrfiles.com/ugd/b8c837_06c2953bfe0242299008cf429c93311e.pdf
    • https://cdn.shopify.com/s/files/1/0427/3229/0215/files/lobab.pdf
    • https://static.usrfiles.com/ugd/b8c837_b82d6f5d1dbb47118c68a5ff1168ab42.pdf
    • https://static.usrfiles.com/ugd/b8c837_6bba8d13ded44810878cf5388918b311.pdf
    • https://static.usrfiles.com/ugd/b8c837_dfe1d7760b8645cd8075260c6caec18d.pdf
    • https://static.usrfiles.com/ugd/b8c837_9e1dc46d139944eb953cee959a3f4db3.pdf
    • https://static.usrfiles.com/ugd/b8c837_0109593593f24dd995b514e8f861c29a.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_off00006d16.bin
03128d184920d7288a678433051fa45d54e9163584f80b06b1f55851c1610413		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D16 4884 bytes
font_01_sfnt_off00007dad.bin
387859d10a34e93e350926c11b5dedd832459c1508a0b19a0ebe54032f94045b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DAD 10512 bytes

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