Malicious PDF — malware analysis report

Static analysis result for SHA-256 84d151c07fc484f4…

MALICIOUS

PDF

50.2 KB Created: 2020-08-30 22:47:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4579c090b659aca95b51405bf1f67a25 SHA-1: cb4c8d8046b9ef41d33a96e61f0da52144257503 SHA-256: 84d151c07fc484f4793fa7e163f60a37bd4e2d8ee33ab8da4a3e89cce179e9ba
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with the primary heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/wix?keyword=jeedi+ginjalu+mp3+song', which is flagged as malicious. The presence of a link farm suggests an attempt to distribute malicious content or phishing pages.

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=jeedi+ginjalu+mp3+song
    • https://static.usrfiles.com/ugd/b8c837_ea0001b221fd4fb5b415616e2a688e68.pdf
    • https://static.usrfiles.com/ugd/09273f_d3d69449a87846cc89572006296d9afe.pdf
    • https://static.usrfiles.com/ugd/b910ae_f7bcb378855842029ccc0388cbf4d09b.pdf
    • https://static.usrfiles.com/ugd/b8c837_9eace22d32914984a2f7a99007a56742.pdf
    • https://static.usrfiles.com/ugd/b8c837_75af4c98b558483ab5b7d42cc283ab75.pdf
    • https://cdn.shopify.com/s/files/1/0430/2418/7549/files/bipexizukaduvowemadil.pdf
    • https://cdn.shopify.com/s/files/1/0447/0921/6409/files/causative_have_advanced_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0434/5911/7206/files/zejibunizusufutosutinev.pdf
    • https://static.usrfiles.com/ugd/79e5df_e1676b940efb4c468fb4983610bd2e84.pdf
    • https://static.usrfiles.com/ugd/dc8a8e_45c508d5494942c88c0a303ba4cb8223.pdf
    • https://static.usrfiles.com/ugd/b8c837_24f7d0fef4b5417e9c7205c9f62d74ad.pdf
    • https://static.usrfiles.com/ugd/b8c837_778eadfd0cd3492fad1978ab6ba96529.pdf
    • https://cdn.shopify.com/s/files/1/0431/6663/0050/files/isometric_paper_a4.pdf
    • https://cdn.shopify.com/s/files/1/0428/5169/6796/files/mathematical_symbols_list.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
stream_005_off0000928b.bin
405a3cf200a06cc0d4e16c3c46acfcd15989a1d1094906007f813ebf79348af5		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x928B 22780 bytes
font_00_sfnt_off00005498.bin
37518c980fee32e96350255382a2c4aa6b6810bebb0845743c4065855f577169		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5498 5412 bytes
font_01_sfnt_off000066f3.bin
a663c40bf238406c18fcb57ca4646dfffc24b0df5c4b80525c876fa8d5866869		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66F3 13840 bytes

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