Malicious PDF — malware analysis report

Static analysis result for SHA-256 96225c22743a5262…

MALICIOUS

PDF

45.8 KB Created: 2020-08-29 17:15:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 19a88da87008e880f435fcb48a210b78 SHA-1: d5a2948509e79327522ee120e54bb50a3821c46f SHA-256: 96225c22743a526298e4408acf34b4ef74ad9704e6796ccf2dd4a768c98d5f2a
152 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.cc/wix?keyword=league+of+angels+2+formation+guide', points to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, appears to contain text related to a game guide, likely a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=league+of+angels+2+formation+guide
    • https://static.usrfiles.com/ugd/b8c837_965c8c0373814048ad8d9eb9b11ac205.pdf
    • https://static.usrfiles.com/ugd/b8c837_1df76c52905049e4a7f838e2a31f28a2.pdf
    • https://static.usrfiles.com/ugd/374ce0_6aace07cc3bf4cf49613982e2434b492.pdf
    • https://static.usrfiles.com/ugd/38bf1f_49a69257067a47a8959a5d1adbc80c6d.pdf
    • https://static.usrfiles.com/ugd/c12414_b831552268ea4a129eb6988074f745ef.pdf
    • https://static.usrfiles.com/ugd/b8c837_57c7de3b0d364c1fbf8deb0b00ac6e9d.pdf
    • https://static.usrfiles.com/ugd/b8c837_2c354ab937614221a690f8e5650ebb8a.pdf
    • https://static.usrfiles.com/ugd/b8c837_1f2190803f6a4aa79018dbb087649e63.pdf
    • https://static.usrfiles.com/ugd/b8c837_bb1e6880f2654da2884085ebdeb17af9.pdf
    • https://static.usrfiles.com/ugd/b8c837_ab4b9dd1f4d2481b88e569ff2cff4b1a.pdf
    • https://static.usrfiles.com/ugd/b8c837_81a1a1ea9071436fa46061a6bd567d35.pdf
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/werurinimaririnivizurisu.pdf
    • https://cdn.shopify.com/s/files/1/0435/6318/8383/files/xelinurinage.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_off00006146.bin
35499750e5bd140c00d7b31753067c8334b3f8732589b1c0b5f355e56897f3ce
pdf-font-stream PDF embedded font (sfnt) at offset 0x6146 5300 bytes
font_01_sfnt_off0000733e.bin
82e80f20941fbb7f580c5cd6234fdb7a241329eb5aba86c842a74604c4b191a5
pdf-font-stream PDF embedded font (sfnt) at offset 0x733E 9812 bytes
font_02_sfnt_off00009500.bin
9ffc405fbed68b1ed35cf25504b2a045b5802e2074cf99e6920a228075e829fc
pdf-font-stream PDF embedded font (sfnt) at offset 0x9500 16160 bytes