Malicious PDF — malware analysis report

Static analysis result for SHA-256 5612b34af7f7d9f2…

MALICIOUS

PDF

134.3 KB Created: 2020-09-05 05:28:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 378258ee9412199caf59ece5de9ad9e9 SHA-1: 35f88a3ebcc21d55f6432f916090860b6c334973 SHA-256: 5612b34af7f7d9f2beb963cea35fccfcc76e0ba46ce59b2a8c18e08b97a6018d
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits a PDF link farm, indicating an attempt to obscure or distribute malicious links. The document body, though heavily obfuscated, contains the same URL, reinforcing its role as a lure. The primary attack pattern involves redirecting users through this malicious infrastructure.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.ru/pify?keyword=button+background+transparent+android+studio
    • http://schemas.android
    • https://static.usrfiles.com/ugd/1e32c2_3b8ed99d8918448ebfcdd5df693c5f90.pdf
    • https://static.usrfiles.com/ugd/b8c837_be66833404b94fb0b528e06dfa17749b.pdf
    • https://static.usrfiles.com/ugd/97aff7_b870d1fc2eaa49ae95bf0ae255e89864.pdf
    • https://static.usrfiles.com/ugd/de65f7_1fe6a84d780b40988e7e4e0ed15cb15d.pdf
    • https://static.usrfiles.com/ugd/8b9728_0979cb0bca234942a502c5f93d58db47.pdf
    • https://cdn.shopify.com/s/files/1/0435/3844/8548/files/65696690056.pdf
    • https://cdn.shopify.com/s/files/1/0433/8581/5205/files/razos.pdf
    • https://cdn.shopify.com/s/files/1/0439/6145/0654/files/32349833860.pdf
    • https://static.usrfiles.com/ugd/e1d12c_2550a1fe55ff40719484af95732a0441.pdf
    • https://static.usrfiles.com/ugd/1be480_692243a7f7c94a658ad6ee44abfb5a10.pdf
    • https://static.usrfiles.com/ugd/64bd79_6fa4fbd4e7df49d5929c7cf51ebbbdb2.pdf
    • https://cdn.shopify.com/s/files/1/0459/8887/2351/files/nikon_coolpix_p610_manual_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0429/3158/5180/files/rixisovap.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_off0001c6b2.bin
2a5c93917795e1edecf8a89f0b88bca2f4f4916610c41b81f8395b6ed285d31d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C6B2 5460 bytes
font_01_sfnt_off0001d94f.bin
6cd46a44ca2d422d921f9bce4595eefd0ac185981e4d0ec67c40053106e549a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1D94F 15092 bytes

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