Malicious PDF — malware analysis report

Static analysis result for SHA-256 e446b4432c6f0f76…

MALICIOUS

PDF

40.9 KB Created: 2020-08-30 05:15:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c429e84da5913fa27a492028056cd17 SHA-1: eafee50567c36fc8aef156b5d5d5e972a052eec7 SHA-256: e446b4432c6f0f76b57a108d83099f71f94f18ec96858285f7652d65fcd03e4f
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, containing numerous embedded URLs. One prominent URL, 'https://ttraff.cc/wix?keyword=agile+and+lean+principles+definition', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and other links pointing to 'static.usrfiles.com', suggesting a coordinated effort to distribute malicious content or manipulate search engine results.

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=agile+and+lean+principles+definition
    • https://static.usrfiles.com/ugd/b80405_d127074ec40c46f1b564f1108e97bbb0.pdf
    • https://static.usrfiles.com/ugd/e2b09b_75ca4163dcc44c3bb15325bdf47073cd.pdf
    • https://static.usrfiles.com/ugd/253000_ad3e2b9e7c204d46bf374ec0ec674acb.pdf
    • https://static.usrfiles.com/ugd/ddb60a_e25f5cb4f451439fb38d73f78a0f3596.pdf
    • https://static.usrfiles.com/ugd/76de1a_aea388df0a5043f6adafbc718168526d.pdf
    • https://static.usrfiles.com/ugd/b8c837_dcdcae093c5d4f0183a0be9bb8c53f65.pdf
    • https://static.usrfiles.com/ugd/b8c837_5a72c0dbd08049159532716359c511d1.pdf
    • https://static.usrfiles.com/ugd/b8c837_63f5b5e8bde64ac286054fa631610ed4.pdf
    • https://static.usrfiles.com/ugd/24853a_a0358bc6e76d4fd3b0d64b084d316256.pdf
    • https://static.usrfiles.com/ugd/4725f1_7b708de6c829412db20a8bb87369abf3.pdf
    • https://static.usrfiles.com/ugd/b8c837_a6ac94d7694e49bdafb1d80a59324829.pdf
    • https://static.usrfiles.com/ugd/b8c837_f1c22cce53d44ffab0fb13b1d5cecbab.pdf
    • https://static.usrfiles.com/ugd/97368a_42498846ba864e6c8137662132cdd235.pdf
    • https://cdn.shopify.com/s/files/1/0429/2709/5967/files/chess_titans_game_for_windows_8._1.pdf
    • https://cdn.shopify.com/s/files/1/0438/4188/0224/files/razovagujefupon.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_off000062c9.bin
351009c0fd7d13be0843f362fadea156eb813822d00afc38fc8fa02555702c48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62C9 5312 bytes
font_01_sfnt_off000074dd.bin
2c3991cba6ec3f4399116b97b107ea12eb5cfff541125fac4cf1ccbb0bd2c354		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74DD 9936 bytes

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