Malicious PDF — malware analysis report

Static analysis result for SHA-256 56925c57cd0db817…

MALICIOUS

PDF

34.5 KB Created: 2020-09-01 15:37:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1596be44e3d3e94adee090ab18225ba SHA-1: 9742fa812bd1e573f9f32fd9aaea6270963d19e6 SHA-256: 56925c57cd0db81781275e66e4bc28d635fa6a0e9c697972924f4c6c6428d3eb
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.club'. Additionally, it exhibits a PDF link farm heuristic, with numerous links pointing to Shopify domains, likely for SEO manipulation or to obscure the malicious destination. The document body, though heavily obfuscated, contains the URL 'https://ttraff.club/wix?keyword=the+movie+between+the+sheets', reinforcing the malicious redirector's presence.

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=the+movie+between+the+sheets
    • https://cdn.shopify.com/s/files/1/0433/4937/7177/files/kujunosogafaxodobirusizi.pdf
    • https://cdn.shopify.com/s/files/1/0439/8222/5566/files/54337095939.pdf
    • https://cdn.shopify.com/s/files/1/0457/7060/4700/files/mystic_messenger_yoosung_good_ending_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/4313/4362/files/temuxelimi.pdf
    • https://static.usrfiles.com/ugd/234f58_a0ea5817c0e547faaa16aa266817d460.pdf
    • https://static.usrfiles.com/ugd/b8c837_c72d4cc9d08e407a96a115c73616bcef.pdf
    • https://static.usrfiles.com/ugd/b8c837_ee6500cddca948f0a9db217b15bce96f.pdf
    • https://static.usrfiles.com/ugd/b8c837_515eaca7ad8d4dcc94d13af5426e78b9.pdf
    • https://cdn.shopify.com/s/files/1/0435/0181/3915/files/the_beatles_love_songs_album_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/4364/2792/files/walks_like_a_duck.pdf
    • https://cdn.shopify.com/s/files/1/0431/2150/8506/files/clinical_anatomy_of_larynx.pdf
    • https://cdn.shopify.com/s/files/1/0436/6408/1046/files/95582351651.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_off00004a61.bin
7bc6158ef3d64de5dad07ddd469122859e456c2c924b96a397d498a699a18a89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A61 4828 bytes
font_01_sfnt_off00005ac1.bin
ba4701720e63badabcde589f92668437576c487a7cacdb70a493ecb2442196ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AC1 10168 bytes

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