Malicious PDF — malware analysis report

Static analysis result for SHA-256 352c4351cd3dca7c…

MALICIOUS

PDF

49.2 KB Created: 2020-08-01 07:09:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a978603743eaf4919632b7ef860ecf5 SHA-1: b99fc55c30243813e74fbdabd2b27973b110386e SHA-256: 352c4351cd3dca7cccfc01c55db51a05adad244d75a4571aa1eb67049b452ece
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic firing indicates a direct link to a known malicious redirector at `ttraff.ru`. This suggests the document is designed to lead users to malicious websites, likely for phishing or malware distribution. No scripts were extracted from this sample.

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=lms+killbook+of+a+bounty+hunter+pdf
    • http://files.traditionsandrecipes.com/uploads/1/3/1/4/131437779/21f4c2b8.pdf
    • http://files.calvinpresnorfolk.com/uploads/1/3/2/6/132696483/3166015.pdf
    • http://files.shannondrhodes.com/uploads/1/3/0/8/130873907/1944747.pdf
    • http://files.toddbennethum.com/uploads/1/3/2/8/132814241/zurizusiku-lozijolujisali-wifuzejafi-vapiwa.pdf
    • http://files.sneakerbots4all.com/uploads/1/3/2/6/132696128/3185586.pdf
    • https://cdn.shopify.com/s/files/1/0428/3911/3895/files/16272851415.pdf
    • https://cdn.shopify.com/s/files/1/0433/0238/7867/files/8580774413.pdf
    • https://cdn.shopify.com/s/files/1/0428/8859/3571/files/vukelexujagapetudazatax.pdf
    • https://cdn.shopify.com/s/files/1/0427/3173/3159/files/wixonozisu.pdf
    • https://cdn.shopify.com/s/files/1/0438/1884/4322/files/94798188811.pdf
    • https://cdn.shopify.com/s/files/1/0434/2090/9718/files/reactor_incremental_reddit.pdf
    • https://cdn.shopify.com/s/files/1/0439/4529/6027/files/magometixofow.pdf
    • https://cdn.shopify.com/s/files/1/0438/2697/0786/files/honda_magna_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/8063/6821/files/find_in_array_php.pdf
    • https://cdn.shopify.com/s/files/1/0428/4809/2327/files/gisifasawova.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/27045045013.pdf
    • https://cdn.shopify.com/s/files/1/0429/9007/6057/files/lukezadetuzimak.pdf
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/nawejifenuke.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_off00008154.bin
75ab18cbc765dc64408d53b492562c2292fd8531e91f9d88ab50ad19f494e87a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8154 5528 bytes
font_01_sfnt_off000093f8.bin
7017924568fd81f149b69a0934fe6a6c32fe6a225480d38ecfb00f1f2c511ffc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93F8 10804 bytes

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