Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc3a6396cee19470…

MALICIOUS

PDF

78.3 KB Created: 2020-07-27 02:47:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d476105b609778ab62514fadae8cb3f SHA-1: afa51846bca6e31cbbd8c17f6037f7fb714eba41 SHA-256: dc3a6396cee19470253a06526e05423c627830a53ab1e2aadc50869f55b1544e
150 Risk Score

Malware Insights

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

The PDF file contains numerous links to external resources, a technique often used to obscure malicious intent and distribute traffic across multiple domains. One critical heuristic identified a link to a known malicious redirector, suggesting an attempt to lead the user to a harmful site. The document body, though partially corrupted, indicates a lure related to 'Saunders cervical traction treatment guidelines', likely a pretext to encourage clicks on the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=saunders+cervical+traction+treatment+guidelines
    • http://files.spawholesaleproducts.com/uploads/1/3/1/8/131856987/965ca67fbbe5.pdf
    • http://files.rabbitmountainlavender.com/uploads/1/3/0/7/130738625/futevukumuj_lulamatix_libujuferebetux.pdf
    • http://files.mandmcattlecompany.com/uploads/1/3/1/3/131381553/8842180.pdf
    • http://files.penrosetutoringandlearning.com/uploads/1/3/0/7/130776273/pigufivagab.pdf
    • https://cdn.shopify.com/s/files/1/0427/8157/3279/files/zuzujebububerabifabadinik.pdf
    • https://cdn.shopify.com/s/files/1/0440/8904/9238/files/10029637090.pdf
    • https://cdn.shopify.com/s/files/1/0432/5074/5512/files/7877652272.pdf
    • https://cdn.shopify.com/s/files/1/0436/2564/4192/files/94906859451.pdf
    • https://cdn.shopify.com/s/files/1/0431/2409/7191/files/99598898870.pdf
    • https://cdn.shopify.com/s/files/1/0431/2521/1296/files/koguxuberonevipifuko.pdf
    • https://cdn.shopify.com/s/files/1/0428/3439/5295/files/wofufexafile.pdf
    • https://cdn.shopify.com/s/files/1/0428/5746/3971/files/latupolal.pdf
    • https://cdn.shopify.com/s/files/1/0431/8907/6117/files/bajolizuk.pdf
    • https://cdn.shopify.com/s/files/1/0434/2553/0005/files/1380793909.pdf
    • https://cdn.shopify.com/s/files/1/0432/1512/6685/files/gawugobenubizonezexitof.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_off0000f61c.bin
3d069105793dae9e39b7c1126d315d87ec93bf9ee78b14afd23f4ab470bdb15d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF61C 5304 bytes
font_01_sfnt_off00010800.bin
c4c5d3401fefc8fdeaa6fd21d70f37f8e25d5f6cf88896240c2574197a742a7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10800 10424 bytes

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