Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2d328955681109a…

MALICIOUS

PDF

35.9 KB Created: 2020-08-11 16:52:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47ceb3d8765f2a6e6f3bc5d29616a6c5 SHA-1: 55579eb9030839cf6467300f19521ee873a2f1ce SHA-256: e2d328955681109a7599e440129922143748dfbb05cd4c0311ec686cd55ff7c0
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text referencing 'backhoe operator manual pdf' and a URL pointing to a redirector. This suggests the document is designed to trick users into clicking malicious links under the guise of providing a manual.

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.com/pify?keyword=backhoe+operator+manual+pdf
    • http://files.stefanodenicolai.net/uploads/1/3/0/7/130739783/7345816.pdf
    • http://files.buffalohorticulture.com/uploads/1/3/1/4/131406717/d32f4bf79.pdf
    • http://files.caninetrainingchallenge.com/uploads/1/3/1/8/131871778/5e9a7190ad404.pdf
    • http://files.roundislandlightmichigan.com/uploads/1/3/1/0/131071056/paxev-kejenoxivil.pdf
    • https://cdn.shopify.com/s/files/1/0432/6824/3614/files/non_probability_purposive_sampling.pdf
    • https://cdn.shopify.com/s/files/1/0432/3809/7051/files/76909870626.pdf
    • https://cdn.shopify.com/s/files/1/0432/1820/6887/files/83695590671.pdf
    • https://cdn.shopify.com/s/files/1/0436/7355/1001/files/local_anesthesia_in_pediatric_dentistry.pdf
    • https://cdn.shopify.com/s/files/1/0435/3179/6632/files/57422296107.pdf
    • https://cdn.shopify.com/s/files/1/0431/2861/9168/files/53642871546.pdf
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/81194634404.pdf
    • https://cdn.shopify.com/s/files/1/0439/6512/0670/files/nudeluxojogikaraxebona.pdf
    • https://cdn.shopify.com/s/files/1/0428/3075/8054/files/82065808019.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vunazazaxukatokezidabu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8642/9861/files/dipomujamogigupesexumoroz.pdf
    • https://cdn.shopify.com/s/files/1/0431/3051/9716/files/titiwiniwe.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_off00004e11.bin
475ca97b763a4df1c84bc8739cc764792e2a018dfdeb2aa80b2bed16a45ccfcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E11 5332 bytes
font_01_sfnt_off00006005.bin
c80bf47808fa3f19f725da2c4a14d234ced6c678fc9466425a6a2e866c3f88cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6005 10300 bytes

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