Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd04d661969e096c…

MALICIOUS

PDF

42.7 KB Created: 2020-09-04 11:52:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68b11b9a075a805b9d17a9a2c368cdc9 SHA-1: d2d67d2c6acd40195407c5b61fc6566262c34a0e SHA-256: bd04d661969e096c65d0feb2d37829822664553b6f31817f4e6ee6d00aa1a878
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious infrastructure, disguised as a 'general chemistry review sheet'. This heuristic firing, combined with the presence of numerous other embedded links pointing to Shopify, suggests a link farm or redirection tactic. The primary malicious URL identified is https://ttraff.club/pify?keyword=general+chemistry+review+sheet, which is flagged as a malicious redirector.

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/pify?keyword=general+chemistry+review+sheet
    • https://cdn.shopify.com/s/files/1/0437/6569/4613/files/91159842870.pdf
    • https://cdn.shopify.com/s/files/1/0441/2473/3592/files/44802834434.pdf
    • https://cdn.shopify.com/s/files/1/0437/8991/0167/files/57641165008.pdf
    • https://cdn.shopify.com/s/files/1/0432/6647/4139/files/fatupokupekawawiturusepuf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tedogunugovosilogupex.pdf
    • https://static.usrfiles.com/ugd/8b97dd_566e5cee57ba49fe988540fc1fccf028.pdf
    • https://static.usrfiles.com/ugd/277b62_7c7c849029bc487b9b2652969d4480ce.pdf
    • https://static.usrfiles.com/ugd/f55bec_41e7f6ed24c14269b819c971d5856949.pdf
    • https://cdn.shopify.com/s/files/1/0428/1758/5308/files/wepiliwagoderugeb.pdf
    • https://cdn.shopify.com/s/files/1/0432/2462/9411/files/direct_reported_speech_ks2_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/9350/7739/files/bavilexiwekeb.pdf
    • https://static.usrfiles.com/ugd/b8c837_3817d52ff11649bc92c5abae18723297.pdf
    • https://static.usrfiles.com/ugd/5fd5c1_4929f63ad5ae49efbafba9bdb0042e46.pdf
    • https://static.usrfiles.com/ugd/2074c9_391e933c450f462ea41f40f1a152648f.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_off0000684a.bin
005bb0efafccb9b904eb6a8ada7909d9b6e7da66e9b129817ad99e8156ae4abb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x684A 5324 bytes
font_01_sfnt_off00007a4d.bin
4e2cbd34afd654ebe3272e84233cc1d6906768e7ae20a18a07eafddac90f23d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A4D 9996 bytes

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