Malicious PDF — malware analysis report

Static analysis result for SHA-256 f46aa8797ee720e8…

MALICIOUS

PDF

89.4 KB Created: 2020-09-06 13:22:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e03e8dcbf6c9b619d3cbb1de1066d71 SHA-1: 38031ccdd6250a4dc77e1d6473b0c2a2819b6da7 SHA-256: f46aa8797ee720e8413bb31c43892cc702a6406bf7fa7fc98a671ef55c587e67
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=equidad+de+genero+en+ni%25C3%25B1os+pdf'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous links to external PDFs, including one hosted on Shopify. The presence of the 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests the document may be part of a multi-stage attack, where the user is instructed to open a password-protected archive, likely containing the actual payload.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.me/wix?keyword=equidad+de+genero+en+ni%25C3%25B1os+pdf
    • https://cdn.shopify.com/s/files/1/0430/4781/3269/files/31429496986.pdf
    • https://cdn.shopify.com/s/files/1/0429/7241/4106/files/sagogurirazabokuramiwe.pdf
    • https://cdn.shopify.com/s/files/1/0430/2172/9955/files/cervical_radiculopathy_physical_therapy_protocol.pdf
    • https://cdn.shopify.com/s/files/1/0434/5777/3718/files/pajezobakajawip.pdf
    • https://cdn.shopify.com/s/files/1/0427/5778/3718/files/fesevu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7877/9029/files/26780364607.pdf
    • https://static.usrfiles.com/ugd/5ea691_b4066cc7bf674d5a93ed9b9dbb5b26b8.pdf
    • https://static.usrfiles.com/ugd/5ed537_01ab4d78bf1d47d0b84a2fbf76f55ee3.pdf
    • https://static.usrfiles.com/ugd/d99ef3_7458b097be524419a29abb337a88cb99.pdf
    • https://static.usrfiles.com/ugd/98d639_a7ccc7bab9fa4c41b1d22b1048565300.pdf
    • https://static.usrfiles.com/ugd/ed8107_caf3f5bba83148298b3baa657654be5b.pdf
    • https://static.usrfiles.com/ugd/54dfea_41535ab20a5c4784b47c4edf0b1e184a.pdf
    • https://static.usrfiles.com/ugd/0789d5_564f5d108a4e4de9a3d34ad975ef6897.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_off0001166c.bin
9b5340f882015d28ae8b57ac4f28af939f39295f5c1aad442d9ff89a7223a5c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1166C 5472 bytes
font_01_sfnt_off000128d4.bin
d538721f7959526ba0ca47d932e74c0d25cac0f4caa0830d54902868eabaf4be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x128D4 15136 bytes

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