Malicious PDF — malware analysis report

Static analysis result for SHA-256 7df74a82a1bfecb0…

MALICIOUS

PDF

42.1 KB Created: 2020-08-30 06:44:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8da50875006657ff00cf0c4ca14d25d5 SHA-1: dc6d55932b11ec35416cac743e6360e400605a66 SHA-256: 7df74a82a1bfecb010bd86a9499b5c50980889c080e5901309472316e6a24f02
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=edge+of+the+empire+character+creation+guide'. Additionally, another critical heuristic indicates a PDF link farm with numerous external links, many hosted on 'static.usrfiles.com'. The document body, though heavily obfuscated, contains the same redirector URL. This suggests the primary purpose is to lure users through a seemingly benign document into a malicious redirection chain.

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=edge+of+the+empire+character+creation+guide
    • https://static.usrfiles.com/ugd/b8c837_a6ddb78312ce49768f5daf9ceeee655e.pdf
    • https://static.usrfiles.com/ugd/1f2646_ab761701b6564bb599c4eeee8fb4c37f.pdf
    • https://static.usrfiles.com/ugd/b8c837_a6071401020040e89cf7e0f04e877af2.pdf
    • https://static.usrfiles.com/ugd/a44510_d50020334f6f4338b05ace7687436435.pdf
    • https://cdn.shopify.com/s/files/1/0428/4186/6403/files/osrs_black_demon_slayer.pdf
    • https://static.usrfiles.com/ugd/4d6844_ce093bb035b041ac83b184fe97ac0935.pdf
    • https://static.usrfiles.com/ugd/b8c837_cc17681cc45544259d04b49a771b5b28.pdf
    • https://static.usrfiles.com/ugd/b8c837_8e7c60119e7a47c4bb0677d44fedcb88.pdf
    • https://static.usrfiles.com/ugd/ad2ade_e3b9f939fea94e6b9a8484443e410c8d.pdf
    • https://static.usrfiles.com/ugd/b8c837_538721c2a6c542a3807f4fcdeba1b002.pdf
    • https://static.usrfiles.com/ugd/20d83a_67e626a8297046ef8011a1d15be16af8.pdf
    • https://static.usrfiles.com/ugd/724bd4_390a3f3224ea458e84cf3ed6e38a4acf.pdf
    • https://static.usrfiles.com/ugd/97634b_3454d8773f264f11a88af737bb0ee16d.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_off000067a4.bin
98b36be40a9114ccccb0f2c927a09155c3448a9dbf1e6218ddff0cc55d2189aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67A4 5316 bytes
font_01_sfnt_off00007996.bin
de815da0bbc0d04fb0a64df02fc7a67b4d9028be4694854eb4866147efa975c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7996 9980 bytes

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