Malicious PDF — malware analysis report

Static analysis result for SHA-256 376e4f0fd9e0b225…

MALICIOUS

PDF

47.0 KB Created: 2020-08-29 07:04:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86b1b5fa2c448265b38c87d1f6c16e9a SHA-1: aa61c3bd98171abb18af31d27309df71d8686c71 SHA-256: 376e4f0fd9e0b225599d21930edf9c4fc8acadd5ff00201576edaefde75250ce
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/wix?keyword=beach+buggy+racing+mod+apk+for+laptop'. This URL is likely used to redirect the user to a malicious site. The document also contains a PDF link farm, with many links pointing to static.usrfiles.com, suggesting an attempt to manipulate search engine results or distribute content. 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.cc/wix?keyword=beach+buggy+racing+mod+apk+for+laptop
    • https://static.usrfiles.com/ugd/b8c837_7383c48d06cb41799bd6d22c2e475cff.pdf
    • https://static.usrfiles.com/ugd/b8c837_506724a12a4b45fea7f9a92acaa957f0.pdf
    • https://static.usrfiles.com/ugd/b8c837_dce09b174c1a4acfb51d3f1548940bbf.pdf
    • https://cdn.shopify.com/s/files/1/0434/7274/8709/files/77649263672.pdf
    • https://cdn.shopify.com/s/files/1/0434/7353/5142/files/medicinal_plants_and_their_uses.pdf
    • https://static.usrfiles.com/ugd/b8c837_8fd8ef06d5e1496ba36508712f43b540.pdf
    • https://static.usrfiles.com/ugd/b8c837_e37f0d60dca64d2186135b4c078352fe.pdf
    • https://static.usrfiles.com/ugd/b8c837_72dddff18c0a4736bcc64871d0e044ba.pdf
    • https://static.usrfiles.com/ugd/b8c837_657c74f870144bc7a1008b0e8912f42c.pdf
    • https://static.usrfiles.com/ugd/b8c837_6fe995ee5fed4cb8b55b621b8130316c.pdf
    • https://static.usrfiles.com/ugd/b8c837_b80a51276c4640d8b781c73719c34f29.pdf
    • https://static.usrfiles.com/ugd/b8c837_fed169ac607041edb01b5777e1d865e3.pdf
    • https://static.usrfiles.com/ugd/b8c837_547ca21da4f04dcaa56cfb3bb5a8d752.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_off0000779a.bin
82a220eac689a89836ab5c2d5e90229b8b881ed2b347189d7a5cdf9340b43d57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x779A 5744 bytes
font_01_sfnt_off00008b06.bin
e4ed0c53d828e7caf597c387717e998ddece51247d3e17a7a6e4be316d704390		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B06 10412 bytes

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