Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc137467466d9385…

MALICIOUS

PDF

47.4 KB Created: 2020-08-30 18:29:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01fd05761eddeb228d1c683ff02c462f SHA-1: 6dcd75d3c6122507ed550977ce80b91c7a036c4c SHA-256: dc137467466d9385f70fc14d135b138dc1cb456c8ecea70c9ba2c9c2b0ec2e7c
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that points to a URL related to 'watch a discovery of witches season'. This link is designed to lure users to a malicious site. The PDF also contains a large number of external links, many of which point to benign content, suggesting a link farm or SEO poisoning tactic. No scripts were extracted, and the document body is heavily obfuscated, but the primary malicious intent appears to be redirecting users to the ttraff.club domain.

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=watch+a+discovery+of+witches+season
    • https://static.usrfiles.com/ugd/b8c837_ed96ab30fe9b4985bb31f55e0049d212.pdf
    • https://static.usrfiles.com/ugd/b8c837_d345e268873f4e8cafee38c42d1886bc.pdf
    • https://static.usrfiles.com/ugd/a18aa6_ace1b2eefc794a18a7a738afd759f3f4.pdf
    • https://cdn.shopify.com/s/files/1/0430/7235/6505/files/how_to_install_opencv_on_raspberry_pi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xifadek.pdf
    • https://cdn.shopify.com/s/files/1/0435/4542/8127/files/currency_word_search_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/3699/0885/files/fabifanosatizelizili.pdf
    • https://cdn.shopify.com/s/files/1/0439/1829/5195/files/26766134030.pdf
    • https://static.usrfiles.com/ugd/b8c837_ee156484cb8940ff8acfb0f0c7cf1a97.pdf
    • https://static.usrfiles.com/ugd/a2e20a_62a552d9b7e046e9b798cc690ad4a11d.pdf
    • https://static.usrfiles.com/ugd/82e28d_75a782ee97864dce8a43fc5b4561956e.pdf
    • https://cdn.shopify.com/s/files/1/0459/1216/2453/files/aararo_aariraro_song_from_siruthai_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0461/6427/9448/files/best_acoustic_guitar_music.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_off0000796d.bin
169d00ff7c98b49192ef916abe6251169d3acb8b259bc72e545164b786cc26f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x796D 5344 bytes
font_01_sfnt_off00008bb3.bin
e660c1d1ffec68c67664afa6e157f66ef356bd56fdc61a213847fef02c0a6b8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BB3 11200 bytes

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