Malicious PDF — malware analysis report

Static analysis result for SHA-256 b87e40c0122ee785…

MALICIOUS

PDF

45.0 KB Created: 2020-08-31 00:07:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8665697f00a68288611c88d901f65b83 SHA-1: 3bf5c55117d3ee3d43c28f0ab2a35c30fa4c114e SHA-256: b87e40c0122ee7851b6e21a00f4735c3f936a32d65015f497f6332f02bd91009
120 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.ru/wix?keyword=call+of+duty+sayings'. This indicates an attempt to direct users to malicious infrastructure. The document body, though heavily obfuscated, also contains this URL, reinforcing the lure. The presence of a link farm heuristic suggests this PDF is part of a larger campaign to generate traffic.

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.ru/wix?keyword=call+of+duty+sayings
    • https://cdn.shopify.com/s/files/1/0430/5462/9015/files/learn_python_the_hard_way_reddit.pdf
    • https://cdn.shopify.com/s/files/1/0431/6584/3620/files/nikon_d90_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/3459/0888/files/zutuvalinafunojusupedo.pdf
    • https://cdn.shopify.com/s/files/1/0427/4470/9276/files/zokuwurokulaxixoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/7569/7830/files/bmw_r1200rt_manual_2012.pdf
    • https://static.usrfiles.com/ugd/b8c837_1d00b330d89e41bbb84a22664eb146c1.pdf
    • https://static.usrfiles.com/ugd/87a178_7b2b02e854a1491897f6c8827bed148f.pdf
    • https://static.usrfiles.com/ugd/769f78_99b95eec94fe4028af1d487e119d5a29.pdf
    • https://static.usrfiles.com/ugd/286fb8_4390b60574974e8c93547ae192f09a5f.pdf
    • https://static.usrfiles.com/ugd/b8c837_43597533810547daa7ba4c2ad732d0a5.pdf
    • https://static.usrfiles.com/ugd/b8c837_6095cd605a4b43bca7bb6f59728d8c0f.pdf
    • https://static.usrfiles.com/ugd/67e251_125244cfbced4a09a71f4902b16e102b.pdf
    • https://static.usrfiles.com/ugd/c4ccc4_4b657fc92bc14bafb6ed737220e3c63a.pdf
    • https://cdn.shopify.com/s/files/1/0438/2310/4162/files/74686334873.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21533622499.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_off000070e2.bin
864d1a5e008022261a7e05e2e4e638a6b3161c8430cce0bf0a623ea630de5078		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70E2 4988 bytes
font_01_sfnt_off000081f9.bin
d30a2571af3e3fb6e35d2e12650993142be10ca56773c97210e66df9bcfbcdd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81F9 10992 bytes

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