Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4cab51ac3b5ca71…

MALICIOUS

PDF

35.5 KB Created: 2020-08-29 10:06:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c6996561f38529059724c3a50ee8ca8 SHA-1: ce202734fc2be002af2be91c48fa89b8be9e3752 SHA-256: a4cab51ac3b5ca71600998f4e334d712dad1f1c42f2f5b75709feb3c89557978
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/wix?keyword=electrolux+epic+6500+sr+repair+manual'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links. The document body, though partially corrupted, contains the same malicious URL, reinforcing the intent to lure the user to a potentially harmful site.

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=electrolux+epic+6500+sr+repair+manual
    • https://cdn.shopify.com/s/files/1/0437/7696/6808/files/lewamowulubolosifitoxi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3444/files/18348094143.pdf
    • https://cdn.shopify.com/s/files/1/0428/7430/6727/files/bioenergetics_lowen.pdf
    • https://cdn.shopify.com/s/files/1/0433/7300/2906/files/13394374327.pdf
    • https://static.usrfiles.com/ugd/b8c837_8901d2675ded4b4db21fc507091c7d55.pdf
    • https://static.usrfiles.com/ugd/b8c837_4af4ba60d53a4413bc00bf74e439031a.pdf
    • https://static.usrfiles.com/ugd/b8c837_7fa446c470eb4569818538220fc8a54d.pdf
    • https://static.usrfiles.com/ugd/b8c837_4e20110fd41f4636b6ca4aa6395a8683.pdf
    • https://static.usrfiles.com/ugd/b8c837_74c3717893964734b545cf26028f6726.pdf
    • https://static.usrfiles.com/ugd/b8c837_1080edc139e5467cb18a4b056f305d9b.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004068.bin
03bb5aa6ad1aa5a1b7de69b07e57af94a5c41404a9da2581fc2ce67fe8dd3151		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4068 5408 bytes
font_01_sfnt_off000052b0.bin
42efacaed8c50d64b90b9291f2649ac711c1e13ef080d009e26cb7384cbeb476		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52B0 9696 bytes
font_02_sfnt_off00007369.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7369 4324 bytes

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