Malicious PDF — malware analysis report

Static analysis result for SHA-256 29bb314b0c64b5fe…

MALICIOUS

PDF

41.7 KB Created: 2020-08-03 09:12:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f08f6038b27d658898fd182ecb1c196 SHA-1: 7b98f20f5fa50d230d7d258a3e8fe4932f9e6d4d SHA-256: 29bb314b0c64b5febd996b0114bd9e225b1c161fbe2a65831c4280cbae324261
180 Risk Score

Malware Insights

MITRE ATT&CK
T1555 Credentials from Password Stores T1059 Command and Scripting Interpreter

The PDF document contains a link farm and a direct link to a redirector URL, both pointing to external resources. The document body and heuristics indicate a lure for recovery secrets or private keys, disguised as information about SSH tunneling. The primary malicious URL identified is https://ttraff.ru/pify?keyword=ssh+tunneling+mac, which is likely used to redirect the user to a phishing or credential harvesting page.

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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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=ssh+tunneling+mac
    • http://files.salinemusicboosters.org/uploads/1/3/1/3/131384407/f1a40.pdf
    • http://files.drneuhaus.org/uploads/1/3/1/4/131453076/limija.pdf
    • http://files.saintsandsavagespowerlifting.com/uploads/1/3/1/6/131606968/6307523.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50398535586.pdf
    • https://cdn.shopify.com/s/files/1/0435/5912/5153/files/lidabafedijosavilapeziwi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/pesag.pdf
    • https://cdn.shopify.com/s/files/1/0431/3926/8769/files/46448273134.pdf
    • https://cdn.shopify.com/s/files/1/0432/8056/4392/files/angular_cdn_google.pdf
    • https://cdn.shopify.com/s/files/1/0437/8548/6485/files/20339783712.pdf
    • https://cdn.shopify.com/s/files/1/0428/3957/2643/files/dafebuxaxi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/kefone.pdf
    • https://cdn.shopify.com/s/files/1/0431/9117/3278/files/gateferikixosomebonotiwez.pdf
    • https://cdn.shopify.com/s/files/1/0435/3998/8648/files/40731647022.pdf
    • https://cdn.shopify.com/s/files/1/0436/9930/6650/files/86760229412.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_off0000635a.bin
00f7d17f5bb85b19e2bbde660dd5cc68020e6c32aeadda4623e8a4118521e587		 pdf-font-stream PDF embedded font (sfnt) at offset 0x635A 5220 bytes
font_01_sfnt_off000074f5.bin
230a43f934bdb8e499ff2aaf098d14f66e8c921769a95e5f1aca84b113f87b51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74F5 10976 bytes

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