Malicious PDF — malware analysis report

Static analysis result for SHA-256 e96e997f7fe409f2…

MALICIOUS

PDF

52.2 KB Created: 2020-09-01 02:20:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a37f539ad6fbcc1800b637437d4f6a6e SHA-1: 34a50001a54ef9ca212de6887d7ed10e5310d3e9 SHA-256: e96e997f7fe409f2eecc6edd11b1d2e45ad5d01277b5d9bee035cc9fdf39d519
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 'https://ttraff.ru/wix?keyword=behaviourist+theory+of+personality+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links. The document body, though heavily obfuscated, contains the same malicious URL, suggesting the primary intent is to redirect users to potentially harmful content.

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.ru/wix?keyword=behaviourist+theory+of+personality+pdf
    • https://cdn.shopify.com/s/files/1/0431/5850/3573/files/buxixun.pdf
    • https://cdn.shopify.com/s/files/1/0428/8118/8003/files/linesimaxepagobodisu.pdf
    • https://cdn.shopify.com/s/files/1/0466/2856/9253/files/mopifaxekojiroro.pdf
    • https://static.usrfiles.com/ugd/f4de5e_e382201f3a264e5bbc2772228139751f.pdf
    • https://static.usrfiles.com/ugd/b8c837_534f01251945428bbf863bea53b52996.pdf
    • https://static.usrfiles.com/ugd/89363e_94b1fdba09fc43a5a6393426a05d8dfa.pdf
    • https://cdn.shopify.com/s/files/1/0435/4523/1519/files/calcium_restricted_diet.pdf
    • https://cdn.shopify.com/s/files/1/0436/8341/4169/files/ronufu.pdf
    • https://cdn.shopify.com/s/files/1/0435/3795/7023/files/elementary_row_operations_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0435/1367/5930/files/31235142281.pdf
    • https://cdn.shopify.com/s/files/1/0432/7538/7043/files/78235250840.pdf
    • https://static.usrfiles.com/ugd/b8c837_d26cb12c52a44130914d4c5577b4c534.pdf
    • https://static.usrfiles.com/ugd/238140_5d03fe50563a4448b8c2a3c928318f4e.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_off00008fcc.bin
c6c7c9a4a0052652bb3ea5e44697de02580a8333fac767a085e79f670055ec19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FCC 5340 bytes
font_01_sfnt_off0000a201.bin
a3acbc29037e28eef8e411a565210a897f882bf33db7af0091be414f336d280e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA201 10040 bytes

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