Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb20f81d36728613…

MALICIOUS

PDF

52.7 KB Created: 2020-08-29 03:56:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 575105ae402781fc64143685c324db54 SHA-1: 5e1b33152a47d116537c3856ddfc74a056e9da32 SHA-256: cb20f81d36728613183c88e1f9e6f6aac9259a920c3cd930a844b3dbe89cba5d
120 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 'ttraff.com'. This URL is presented in the document body, suggesting a social engineering lure related to resume templates. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on 'static.usrfiles.com'. The primary malicious IOC is the 'ttraff.com' URL, which likely serves as a gateway to malicious content or further exploitation.

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=resume+fill+in+the+blank+pdf
    • https://static.usrfiles.com/ugd/b8c837_fcd7010f44864e0495c381b9c7c8127f.pdf
    • https://static.usrfiles.com/ugd/b8c837_e05324d297dc4267af379c80f65fd9a1.pdf
    • https://static.usrfiles.com/ugd/b8c837_44daba66323c4a78a8b07fbff4361a66.pdf
    • https://static.usrfiles.com/ugd/b8c837_6583fa9c66cf4fcbbe1311bb8816739a.pdf
    • https://static.usrfiles.com/ugd/b8c837_472fc1bcb105496188c35e0113760d50.pdf
    • https://static.usrfiles.com/ugd/b8c837_0caf9dcfc96840cc8396062fb021bf47.pdf
    • https://cdn.shopify.com/s/files/1/0438/5246/4293/files/stargate_watch_order_reddit.pdf
    • https://cdn.shopify.com/s/files/1/0438/2906/7938/files/sijasitosivasofejo.pdf
    • https://cdn.shopify.com/s/files/1/0436/4707/4464/files/amd_action_authenticate_sm.pdf
    • https://cdn.shopify.com/s/files/1/0438/4142/1472/files/gijigotetexowix.pdf
    • https://static.usrfiles.com/ugd/b8c837_f3ff1f96ac4e4a24bc5ccdc4a0ac3321.pdf
    • https://static.usrfiles.com/ugd/b8c837_132eb013f89043e59db09a7000f93195.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_off00008644.bin
a17885b4fd577e0298a64705d5055d2ac7c2363fd7008e9cf236b3df412a17d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8644 2828 bytes
font_01_sfnt_off0000903e.bin
0b4b2b92c37e8256820a01e9c0ede5228b659fb77bedd5e300dd9758d35a7ab1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x903E 5396 bytes
font_02_sfnt_off0000a267.bin
0568a62657799a1462ed50ab6e8c91554fcd17dd9f8fd0d391ca47d33bb721c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA267 10468 bytes

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