Malicious PDF — malware analysis report

Static analysis result for SHA-256 30b68add93dee0aa…

MALICIOUS

PDF

74.1 KB Created: 2020-08-29 20:16:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98c6c1b5a7a17b70b9a69415a87404b5 SHA-1: 1526c235175f2a88dfb2620c8a2cb422bb11788b SHA-256: 30b68add93dee0aa6e3d817081dbbdc03e1944e491d1364f62a56827f87f0c09
150 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=taxa+de+riqueza+monopoly+regra'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links. The ML classifier also flagged this PDF with high confidence. The document body appears to be heavily obfuscated or corrupted, but the presence of the malicious URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=taxa+de+riqueza+monopoly+regra
    • https://static.usrfiles.com/ugd/b8c837_c18c34ad10884e728dd5f90b0d3ff43b.pdf
    • https://static.usrfiles.com/ugd/0adedf_860401a1a8614fd7ab70a1f4e1695a8b.pdf
    • https://static.usrfiles.com/ugd/b8c837_0bcdf6cb6138444387f37b9c07b1e985.pdf
    • https://static.usrfiles.com/ugd/0adedf_98eafe194c734623b9b5091b4447b42a.pdf
    • https://static.usrfiles.com/ugd/b8c837_7ae687dded894163a8793a6b9aac9a69.pdf
    • https://cdn.shopify.com/s/files/1/0428/8774/1607/files/amman_movie_songs_masstamilan.pdf
    • https://static.usrfiles.com/ugd/b8c837_bc759c359be643d1a5467d6609002bdf.pdf
    • https://static.usrfiles.com/ugd/b8c837_32d47a91b14d43c08ea441775ec92836.pdf
    • https://static.usrfiles.com/ugd/b8c837_9cbe3226fcdf442c910801843d1f1c5d.pdf
    • https://static.usrfiles.com/ugd/0047a4_9195a520961843f1833e8c3e1a30864c.pdf
    • https://cdn.shopify.com/s/files/1/0431/6066/6274/files/la_cicale_e_la_formica_canzone.pdf
    • https://cdn.shopify.com/s/files/1/0428/4832/1702/files/am._apowersoft_pc.pdf
    • https://cdn.shopify.com/s/files/1/0431/3825/2957/files/bubble_world_game_free_for_pc.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_off0000cf88.bin
96b2c8f3049b337aca4584ad87b1c495c5f902a5c0730a107f8f3857ea5b126a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCF88 5196 bytes
font_01_sfnt_off0000e11d.bin
6fb69c7498662b5843468a2cb6c56f753afbfd606460f890b2cd81d6e6ebb29d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE11D 14004 bytes
font_02_sfnt_off00010d34.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D34 4324 bytes

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