Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5267429efb3c761…

MALICIOUS

PDF

41.2 KB Created: 2020-09-03 03:27:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6633ac8e0855648c354ebc47fbaf517c SHA-1: 6c2d3d56a267d2235df19afffa97a4466bff17f1 SHA-256: b5267429efb3c7614f02031cc0c3070fbdb5503c87f9675d827d054c614c02a1
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=car+simulator+games+free++pc'. The document body, though heavily obfuscated, contains text related to 'car simulator games free pc', suggesting a lure to entice users to click the malicious link. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, further supporting the malicious redirection intent.

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.cc/wix?keyword=car+simulator+games+free++pc
    • https://static.usrfiles.com/ugd/b8c837_82978ccb474743e383af397d10f35d19.pdf
    • https://static.usrfiles.com/ugd/0f5b72_b170ef02648a4238b2dcfd2f77cd9237.pdf
    • https://static.usrfiles.com/ugd/808d8c_2b7462e3ea51424185b5610032fbc195.pdf
    • https://static.usrfiles.com/ugd/b77b08_d5a72c407a5d4f728316175608d62e36.pdf
    • https://static.usrfiles.com/ugd/b8c837_aa6cf3ac9bec41c99a191e674a947401.pdf
    • https://static.usrfiles.com/ugd/b8c837_cc17681cc45544259d04b49a771b5b28.pdf
    • https://static.usrfiles.com/ugd/b8c837_a14da25cc78048a3a60dba82ab30c952.pdf
    • https://static.usrfiles.com/ugd/b8c837_21f6cabfffad41a5b9899de05f52b16f.pdf
    • https://static.usrfiles.com/ugd/b8c837_8c5bd5cdc0a644668659bed3529a5caf.pdf
    • https://static.usrfiles.com/ugd/b8c837_8eb7c0c4a5ac4d84ac2deba233118111.pdf
    • https://static.usrfiles.com/ugd/b8c837_702f50131bac4d9f877ced03cde7340f.pdf
    • https://cdn.shopify.com/s/files/1/0433/4845/9675/files/bekog.pdf
    • https://cdn.shopify.com/s/files/1/0430/7723/8945/files/minecraft_update_1._14.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_off00006374.bin
4501001f2fa223a7183880f445db25a3d6b4513e6dd058dd752aeb7c8f235a52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6374 5240 bytes
font_01_sfnt_off00007535.bin
67839142d03b3d32b21f2013c6ac3f8def7e870f6849dee61562bfb1e798f1b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7535 10128 bytes

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