Malicious PDF — malware analysis report

Static analysis result for SHA-256 307dd1749dd66cdf…

MALICIOUS

PDF

48.4 KB Created: 2020-09-01 21:40:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00c9d20d013add4395fc18e6928a479d SHA-1: c13ef8535b2ad86d5f769271cb7f4fcf4b810021 SHA-256: 307dd1749dd66cdf78dccd9ecbd5c311f1717fb19e560af7e6a6c027741aaaf2
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that leads to a lure for 'free games'. This link points to 'ttraff.club', which is flagged as malicious. The document also exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify and usrfiles.com domains, likely for SEO manipulation or to host further malicious content. The ML classifier strongly indicates maliciousness.

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.club/wix?keyword=mediaf%25C4%25B1re++free+games
    • https://cdn.shopify.com/s/files/1/0433/7047/9766/files/51943590850.pdf
    • https://cdn.shopify.com/s/files/1/0431/8524/2269/files/kekaxikuxu.pdf
    • https://cdn.shopify.com/s/files/1/0440/2331/6630/files/twee_afbeeldingen_samenvoegen.pdf
    • https://static.usrfiles.com/ugd/b8c837_de1f308bf5e34aafbe3b8548f13ecdf3.pdf
    • https://static.usrfiles.com/ugd/b8c837_8f7fdbc6feec41b0ad202b088c67836d.pdf
    • https://static.usrfiles.com/ugd/9904c2_694e030215d04a7eba99750d38167496.pdf
    • https://static.usrfiles.com/ugd/2813e2_e534352a56424634be09265f5c62a44e.pdf
    • https://static.usrfiles.com/ugd/b8c837_b34afd1f93244f2a89670dc982793ca8.pdf
    • https://static.usrfiles.com/ugd/b8c837_d66773c55c68409da9e384c497cd7da9.pdf
    • https://static.usrfiles.com/ugd/a18aa6_08c6a8f2c9324760a8a9e6b0654cd6ca.pdf
    • https://static.usrfiles.com/ugd/9a242c_01ece0bd2c0246da90332148281780da.pdf
    • https://static.usrfiles.com/ugd/5b5da7_3c9eea33a7c94c80be36d959a83750b3.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_off00007de7.bin
f79a8f83f1345009f71f7d203fb873b9beaa728c3faa787e380efbd54718d98e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE7 5232 bytes
font_01_sfnt_off00008fb2.bin
05e02d847f6103137f34319533ea9df321b0f15286c7f97295b45c1cbad20101		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FB2 10500 bytes

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