Malicious PDF — malware analysis report

Static analysis result for SHA-256 814064c23d01ded5…

MALICIOUS

PDF

44.4 KB Created: 2020-09-01 10:30:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7875ece25ff16fb8c1f148e5b6356176 SHA-1: 2c89f612e86574cc8762d0a5516db1fa63321675 SHA-256: 814064c23d01ded52a4cb8a5da4bac12d8f999cb28b422bf99d32a1dbd9e5b50
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with a critical heuristic firing for a PDF link to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.com/wix?keyword=acura+nsx+2019+performance. The document body is heavily obfuscated but contains this URL and other Shopify links, suggesting a link farm or SEO poisoning tactic to lure users to malicious content. No scripts were extracted, and the PDF structure itself does not indicate further malicious actions beyond redirection.

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/wix?keyword=acura+nsx+2019+performance
    • https://cdn.shopify.com/s/files/1/0431/6548/3168/files/how_its_made_season_32_episode_gu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65028435792.pdf
    • https://cdn.shopify.com/s/files/1/0430/7940/1632/files/84698576246.pdf
    • https://cdn.shopify.com/s/files/1/0432/6277/1358/files/39304633826.pdf
    • https://cdn.shopify.com/s/files/1/0437/4895/0170/files/guxinofenuwilozud.pdf
    • https://cdn.shopify.com/s/files/1/0430/9280/3744/files/emotional_intelligence_research.pdf
    • https://cdn.shopify.com/s/files/1/0440/4386/2181/files/guzuwupudixi.pdf
    • https://cdn.shopify.com/s/files/1/0460/1983/8119/files/50797167355.pdf
    • https://cdn.shopify.com/s/files/1/0430/9699/8048/files/18676467211.pdf
    • https://cdn.shopify.com/s/files/1/0428/6211/7020/files/sudo_spctl-_master-_disable.pdf
    • https://static.usrfiles.com/ugd/b8c837_790dd339d1a04b8fb4af639928740fc0.pdf
    • https://static.usrfiles.com/ugd/529dbf_457be07a21414f27885779507cc780b3.pdf
    • https://static.usrfiles.com/ugd/b8c837_04709d29d7f440bb9faddb0415b5f13f.pdf
    • https://static.usrfiles.com/ugd/b8c837_278e3a57eae84c0eab8999e0be6f1c5e.pdf
    • https://static.usrfiles.com/ugd/07625c_ad4c94eb72ad45cda646e697a810e743.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_off00006ad5.bin
f31f921518b5382d9ffb569220f9f866cc411937f140f142a12ae6aed8a93781		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD5 5668 bytes
font_01_sfnt_off00007e0e.bin
b16423460d1e25fad06dc753112b158893f46dacc3f210d29101063ce0566b89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E0E 12224 bytes

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