Malicious PDF — malware analysis report

Static analysis result for SHA-256 c649e11f74430c37…

MALICIOUS

PDF

44.4 KB Created: 2020-08-30 13:11:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fa86b0e105db05e0761b2797aed57a0 SHA-1: 2956270120b46e164a63dbed6720c2ecef8c24ac SHA-256: c649e11f74430c379cb4976109745bdfdfbdbf8d6d3e3f7f083567a9c484be0c
120 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.com/wix?keyword=dd+5th+edition+dungeon+master+guide'. The document body, though heavily obfuscated, also contains this URL and references to a 'DD 5th edition dungeon master guide', suggesting a lure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to 'static.usrfiles.com'. No scripts were extracted from this sample.

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.com/wix?keyword=dd+5th+edition+dungeon+master+guide
    • https://static.usrfiles.com/ugd/50c35f_b359be2582f042aeba37f47b2efaaffa.pdf
    • https://static.usrfiles.com/ugd/b8c837_841b51e9e56641518f1ee9788556fad4.pdf
    • https://static.usrfiles.com/ugd/ca32a8_3c853a157b2b43a7bf3b4798ba1635b1.pdf
    • https://static.usrfiles.com/ugd/b8c837_9109b88c05074a64ba9531a98d372619.pdf
    • https://static.usrfiles.com/ugd/b8c837_02b643eed7824450bff7165a358eac70.pdf
    • https://static.usrfiles.com/ugd/516793_276362e712d44d1791b93287b86debfe.pdf
    • https://static.usrfiles.com/ugd/b8c837_8efc84ac797149e7b103bb65430a3f90.pdf
    • https://static.usrfiles.com/ugd/b8c837_6107227752f744bc9b6093a3d5bc7f42.pdf
    • https://cdn.shopify.com/s/files/1/0438/3119/7856/files/lejudetedodututudo.pdf
    • https://cdn.shopify.com/s/files/1/0438/0445/9170/files/kingdom_hearts_final_mix_english_pat.pdf
    • https://static.usrfiles.com/ugd/b8c837_020fe300be4e4cbbadafe8ae2b3033d0.pdf
    • https://static.usrfiles.com/ugd/b8c837_1f43e0b4ff0844e89acb6ffad7a03ce9.pdf
    • https://static.usrfiles.com/ugd/e4a001_e28be66cc8364ccaaaaa96146c8c6b22.pdf
    • https://static.usrfiles.com/ugd/b8c837_3de7cee158594bb4a84d59cdef87c45d.pdf
    • https://static.usrfiles.com/ugd/36f25b_2c7d185bd3264859a1d95f0bb6344e79.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/
    • https://static.usrfiles.com/ugd/b8c837_8efc84ac797149e7b103bb65430a3f

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fb3.bin
873a97fc6833b3432cedd5b60641440d918da87ea392acc31b0dac232dd744ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB3 5332 bytes
font_01_sfnt_off000081a3.bin
b465b40787b7421e2eaefdfb6225ac2e7d26a297a7205045d3b37d58cbdc4c69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81A3 10172 bytes

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