Malicious PDF — malware analysis report

Static analysis result for SHA-256 334bf55fedf29a1f…

MALICIOUS

PDF

93.9 KB Created: 2020-08-27 20:44:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00039eeda909fa3d8c2dd0d125286056 SHA-1: 1eb81d6c4540c7c2da71ba936010e3d23257c108 SHA-256: 334bf55fedf29a1f7db846aa5602951257ac7492ed0a1df73112b7c38c699e2f
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to lure users to malicious infrastructure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=marxism+and+literature+raymond+williams, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting it's the intended destination for the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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.ru/pify?keyword=marxism+and+literature+raymond+williams
    • http://vubikele.gutbustingames.com/uploads/1/3/0/9/130969204/solade.pdf
    • https://cdn.shopify.com/s/files/1/0430/0688/6051/files/wibob.pdf
    • https://cdn.shopify.com/s/files/1/0432/9046/0324/files/saroxewipefotovezapo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0486/2374/files/mejikimegipinawevub.pdf
    • https://cdn.shopify.com/s/files/1/0430/0842/6147/files/74855567634.pdf
    • https://cdn.shopify.com/s/files/1/0440/6879/8614/files/lejofefekuzoxawodi.pdf
    • https://cdn.shopify.com/s/files/1/0435/7016/7967/files/athens_ga_weather_radar.pdf
    • https://cdn.shopify.com/s/files/1/0433/3145/3081/files/jovedimagudufugevo.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_off0001360e.bin
d1807a5d17d7756c6b487bee176847f638bb767b0c8ce9e57a8e357c06babf49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1360E 5236 bytes
font_01_sfnt_off000147e5.bin
f389672705f0b76c899910352f23f980f5a4663e7a76f06ea6f3c9641b2ae317		 pdf-font-stream PDF embedded font (sfnt) at offset 0x147E5 10248 bytes

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