Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e4825a6c319d2aa…

MALICIOUS

PDF

41.7 KB Created: 2020-09-08 12:01:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9453bbdfd604dbdb146fad3a62616a1e SHA-1: 206d0a7f8839368a6c1f9e4aa2e796b20eab71c4 SHA-256: 4e4825a6c319d2aa5303da4ecb948b07d84a28d3a0c187039440023a6df1ea60
120 Risk Score

Malware Insights

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

The PDF file contains a link disguised as a search result for 'Consumer reports best smart tv 2019'. This link, https://ttraff.club/wix?keyword=consumer+reports+best+smart+tv+2019, is identified as a malicious redirector. The document also functions as a link farm, embedding numerous other PDF links, many pointing to static.usrfiles.com. The primary malicious intent appears to be directing users to potentially harmful external content via the ttraff.club domain.

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.club/wix?keyword=consumer+reports+best+smart+tv+2019
    • https://static.usrfiles.com/ugd/368de4_b67e4c48918844f3a7f383078a95bbc5.pdf
    • https://static.usrfiles.com/ugd/79e0dc_faf2d9f9c9524744bddab4a8b39c0eef.pdf
    • https://static.usrfiles.com/ugd/98d33d_7bba31110c7949b69401cae3f4926766.pdf
    • https://static.usrfiles.com/ugd/06497e_1af7c7e2f1b840f58338289fb7c0e694.pdf
    • https://static.usrfiles.com/ugd/baef12_06f63f11849041e69c11094d43308a96.pdf
    • https://static.usrfiles.com/ugd/c3f59f_7beb55cde8d0458e9cdecf271d85eb78.pdf
    • https://static.usrfiles.com/ugd/3649d2_fbe259997350458fbaf0570c0b433284.pdf
    • https://static.usrfiles.com/ugd/a58b01_03ea328fd44141ca9f593f1328491855.pdf
    • https://static.usrfiles.com/ugd/47e66e_17b34c0ea50543c8b008e430e3facf6d.pdf
    • https://static.usrfiles.com/ugd/162fe6_96d1f5fe781d414d9756437652d3c751.pdf
    • https://static.usrfiles.com/ugd/8acad3_4e1bd985bb024699bf7b9d7d17bda6bb.pdf
    • https://cdn.shopify.com/s/files/1/0462/3853/1738/files/hungry_shark_world_windows_7.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8573/files/94120337421.pdf
    • https://cdn.shopify.com/s/files/1/0427/8488/2844/files/95667014409.pdf
    • https://cdn.shopify.com/s/files/1/0430/1435/7145/files/peniwem.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_off00006683.bin
ec34f9907518befce9370e693a60639e540c23f54a841d79cf483e2f8c3edf92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6683 5520 bytes
font_01_sfnt_off00007926.bin
26967dca58a4f4ddadbaf091f73be12c47fd2be92ff8b6d8b67c60585a1eee4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7926 9652 bytes

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