Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fc3021777396d96…

MALICIOUS

PDF

41.2 KB Created: 2020-08-05 04:23:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72099867a15e32c6dc3d4a5e07127b44 SHA-1: 39fe55b9bbeeba609344a1535d25e96f10f58e60 SHA-256: 8fc3021777396d969f83e5c7852f6c4fdf4e9dac13582debb945cf772645ca11
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=dental+biomaterials+pdf', which is flagged as malicious. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for phishing or malware delivery. No scripts were extracted, limiting the analysis of direct execution capabilities.

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/pify?keyword=dental+biomaterials+pdf
    • http://files.regulatorycheckbook.org/uploads/1/3/1/4/131453536/fikunugutumowi_fenazaxuwanezuj.pdf
    • http://files.thirdstreetchurchofchrist.org/uploads/1/3/1/8/131857305/7347697.pdf
    • http://files.magnifying-lamps.com/uploads/1/3/2/7/132741322/livusa.pdf
    • http://files.amandagullattceramics.com/uploads/1/3/0/9/130969663/rizesavovaboro.pdf
    • https://cdn.shopify.com/s/files/1/0438/8972/1496/files/reliability_theory_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/8030/3263/files/79210109000.pdf
    • https://cdn.shopify.com/s/files/1/0437/0127/2729/files/dulutexefepiv.pdf
    • https://cdn.shopify.com/s/files/1/0430/8277/6729/files/xupuzutumixevidelaxenazos.pdf
    • https://cdn.shopify.com/s/files/1/0435/6728/4383/files/blender_advanced_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0434/5013/8784/files/gufejeteparaxa.pdf
    • https://cdn.shopify.com/s/files/1/0432/0467/3699/files/donapabewojamira.pdf
    • https://cdn.shopify.com/s/files/1/0440/1741/8405/files/8839276588.pdf
    • https://cdn.shopify.com/s/files/1/0430/9280/3744/files/pojosuzefosi.pdf
    • https://cdn.shopify.com/s/files/1/0437/3122/2677/files/stardew_valley_endgame.pdf
    • https://cdn.shopify.com/s/files/1/0433/0671/3253/files/87269002820.pdf
    • https://cdn.shopify.com/s/files/1/0436/1807/4786/files/fewopinaxorarivixudarigob.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_off00006426.bin
df09296f9b8125d04db4a2e1bfcb69dad174a8cadb705e2c900e44de2f462d4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6426 5324 bytes
font_01_sfnt_off00007624.bin
dd8dab308dc73e7ac4a4a418ef6f208d0b31360d3db28403db2957c613825558		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7624 9868 bytes

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