Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab3ae74358af9298…

MALICIOUS

PDF

40.1 KB Created: 2020-08-23 17:28:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41e6988e4fc0432e741d953adea4575b SHA-1: df7e4191ecb11541ab34d4d3fa5db3ec1cdbefeb SHA-256: ab3ae74358af9298b8ae0bba43c28731902a7b4230f15ab830e3cc29c99733c3
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to PDF files. The primary malicious URL is https://ttraff.cc/pify?keyword=guided+reading+lesson+video, which likely serves as a lure to a phishing or malware distribution site. The presence of multiple PDF links suggests an attempt to obscure the final destination or to appear as a benign document repository.

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=guided+reading+lesson+video
    • http://gomeb.neutralhostsolutions.com/uploads/1/3/1/4/131408008/4067194.pdf
    • http://files.warnervalelandscapes.com/uploads/1/3/0/7/130775186/668505.pdf
    • http://tatulupi.syracusehighnoon.com/uploads/1/3/0/7/130738971/4999913.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/6219719719.pdf
    • https://cdn.shopify.com/s/files/1/0431/3179/7668/files/favabuxewesonegimonuvoj.pdf
    • https://cdn.shopify.com/s/files/1/0436/1030/8765/files/fanatabajofa.pdf
    • https://cdn.shopify.com/s/files/1/0429/1795/3702/files/30397938127.pdf
    • https://cdn.shopify.com/s/files/1/0429/0969/6156/files/52652866245.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92835403356.pdf
    • https://cdn.shopify.com/s/files/1/0434/7727/0678/files/panudes.pdf
    • https://cdn.shopify.com/s/files/1/0434/7235/5478/files/zaxixumepodazikopozu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lorirazapevimixawas.pdf
    • https://cdn.shopify.com/s/files/1/0432/0568/9504/files/5504966499.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_off00006153.bin
623e38faffa358d2e287eaa9a4538079ee50756984896637c49494cba2104ca3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6153 5084 bytes
font_01_sfnt_off000072ae.bin
84deac74aaf1e1290d55dbcf860cea37fb28db24bd367aea6cd02c2871865ee0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72AE 9724 bytes

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