Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc0a0c9d023c36a9…

MALICIOUS

PDF

55.8 KB Created: 2020-09-01 03:26:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ffce959ba7cb9b8d2436e922664e9c2 SHA-1: 77beb721e4df6de7139bd4b2f038cdc94ebbcf6e SHA-256: cc0a0c9d023c36a92acbaeba809861f38b1c3cf74af78e3b1e91895776b34448
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/wix?keyword=informant+report+definition'. This URL is likely used to redirect the user to a malicious site. The document also contains a large number of embedded links, characteristic of a link farm, with many pointing to static.usrfiles.com. The document body, though heavily obfuscated, contains the text 'Informant report definition' and the malicious URL, reinforcing the lure.

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.com/wix?keyword=informant+report+definition
    • https://static.usrfiles.com/ugd/20d83a_bde9148329ef4dab8453dc5481316252.pdf
    • https://static.usrfiles.com/ugd/63022f_b4d48757a0444f37ae534766a3f097f9.pdf
    • https://static.usrfiles.com/ugd/2ddd39_4fd537ea2d264a428c79aea3b809f437.pdf
    • https://static.usrfiles.com/ugd/cc14e4_7a3d2907feae4467be014d6a722e20b4.pdf
    • https://static.usrfiles.com/ugd/b8c837_ee79441fcde94d45a23488ab8aedfa4d.pdf
    • https://static.usrfiles.com/ugd/81d6a4_721c8987a6aa483e83e2c91b299d09ac.pdf
    • https://cdn.shopify.com/s/files/1/0434/0311/6709/files/60565980771.pdf
    • https://cdn.shopify.com/s/files/1/0432/2135/2606/files/legit_csgo_skin_sites.pdf
    • https://cdn.shopify.com/s/files/1/0434/1340/5850/files/bakitejewasuputodidimapa.pdf
    • https://cdn.shopify.com/s/files/1/0440/0028/0734/files/toy_story_2_watchcartoononline.pdf
    • https://static.usrfiles.com/ugd/6cfc61_8aefe9e780034dc6a3de086e56a52bf5.pdf
    • https://static.usrfiles.com/ugd/b0cd75_816122bca348456b94063f1a4e8b3961.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_off00009132.bin
be597bc4d5b4f74818395026349c5d77691ca3c521ac573f11c0c98ac12aff74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9132 4704 bytes
font_01_sfnt_off0000a0ff.bin
c57d11954fb9e6aa7de1b1f4c55706ffc1738dfd1b81fa83ab6df3a28b9e5c50		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0FF 10312 bytes
font_02_sfnt_off0000c407.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC407 4324 bytes

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