Malicious PDF — malware analysis report

Static analysis result for SHA-256 c270d5344966fef6…

MALICIOUS

PDF

82.3 KB Created: 2020-09-05 18:19:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 830b93b9607258e35760d84a2d0d23ab SHA-1: 95ab2ba57ec5f66e5e699c507bf46b9c9f829a12 SHA-256: c270d5344966fef6b413644e8ee11d5bc21254924c4d285c7a6cddb8cbc2c456
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=visual+field+interpretation+and+report+form'. The document body, though heavily obfuscated, also contains this URL, suggesting the document's primary purpose is to trick the user into visiting this malicious site. The file also exhibits characteristics of a link farm, with numerous external PDF links.

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=visual+field+interpretation+and+report+form
    • https://static.usrfiles.com/ugd/f55bec_f0fb14be2f404054bd0c166aa739be7f.pdf
    • https://static.usrfiles.com/ugd/d7c203_963fa152a8ea43d990dd8f19f6354d0d.pdf
    • https://static.usrfiles.com/ugd/957c7b_f0315abdc3d840d8b8399f6911e1540f.pdf
    • https://static.usrfiles.com/ugd/b8c837_c87dbd217165444982bf33fe136bafaa.pdf
    • https://cdn.shopify.com/s/files/1/0432/0018/4477/files/nj_transit_117_bus_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0436/9452/2518/files/96785915866.pdf
    • https://cdn.shopify.com/s/files/1/0432/8862/5316/files/bodyweight_training_anatomy.pdf
    • https://cdn.shopify.com/s/files/1/0433/1651/0873/files/19707028051.pdf
    • https://cdn.shopify.com/s/files/1/0432/8403/7792/files/90672269544.pdf
    • https://cdn.shopify.com/s/files/1/0437/2765/0970/files/34071194255.pdf
    • https://static.usrfiles.com/ugd/e02969_2f1b2062d89b41a9883ef305a0283469.pdf
    • https://static.usrfiles.com/ugd/0a052f_ad1b6eda58b2484f9422bd9945a23720.pdf
    • https://static.usrfiles.com/ugd/bfbc46_f734d63d17b34ddb8fea5f0fe7384441.pdf
    • https://static.usrfiles.com/ugd/fbccce_1a4b506f94c241a38553ab86435d73b9.pdf
    • https://static.usrfiles.com/ugd/c3548c_46dafe76be644ef7beea4a96f8500bf7.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_off0001070c.bin
3d47d1858c4cb518eaa904de92548628ce1a76d31e6bb5663f3df2bfeec7025d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1070C 5152 bytes
font_01_sfnt_off00011883.bin
7a617443f3f8aeb64e9e93957f9deef92e45e393df5b72e46931b3d0bdffe8a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11883 10376 bytes

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