Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d28c0677ac545e2…

MALICIOUS

PDF

46.4 KB Created: 2020-07-22 15:22:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 858d2d143b6319b2666b1166b9816db2 SHA-1: 6b23698a763ca3f9a374dbc024e06abcd29b833a SHA-256: 3d28c0677ac545e2f2fd0eeea22391b4cbb367967a82ee96979ac1c957a39cdc
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is ttraff.ru, which is used in a lure related to 'aceites esenciales pdf gratis'. The document body is heavily obfuscated, but the presence of the redirector and the link farm strongly suggests a phishing or malicious redirection attempt.

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=aceites+esenciales+pdf+gratis
    • http://files.hlfmgoats.com/uploads/1/3/0/8/130873839/54ba90c2.pdf
    • http://files.kaitlinkaufman.com/uploads/1/3/0/8/130813550/7430951.pdf
    • http://files.raewyncaisley.com/uploads/1/3/2/6/132680784/sibutubatokune_xujowawase_rudavelol.pdf
    • http://files.watson5th.com/uploads/1/3/1/4/131437677/523ad46a.pdf
    • http://files.tradewinrealestate.net/uploads/1/3/0/7/130776602/3178a965e15aa3.pdf
    • https://cdn.shopify.com/s/files/1/0434/8379/1526/files/95777105174.pdf
    • https://cdn.shopify.com/s/files/1/0430/7291/3557/files/61482859113.pdf
    • https://cdn.shopify.com/s/files/1/0433/5363/7018/files/22516961712.pdf
    • https://cdn.shopify.com/s/files/1/0437/5710/9402/files/78028915776.pdf
    • https://mewalijovil.files.wordpress.com/2020/06/wagokunofibij.pdf
    • https://zitulur.files.wordpress.com/2020/07/64725116364.pdf
    • https://mosufazu.files.wordpress.com/2020/07/33267851282.pdf
    • https://menanesude.files.wordpress.com/2020/06/rujirura.pdf
    • https://cdn.shopify.com/s/files/1/0430/0252/7895/files/39974188291.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92399027362.pdf
    • https://cdn.shopify.com/s/files/1/0431/0836/8545/files/52884097073.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/disizaritenafiki.pdf
    • https://cdn.shopify.com/s/files/1/0428/9485/2252/files/xarufevelusaxi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2902/0317/files/41755246238.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_off000076a3.bin
51be4f2405e856b848170442f3e1d422bfbfcd72b858deb53eaad576192060ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76A3 4992 bytes
font_01_sfnt_off0000879b.bin
f131c3929d5e6b797c389dc370551bacdd8a4c3bce6c57e516f59e61388b5443		 pdf-font-stream PDF embedded font (sfnt) at offset 0x879B 10744 bytes

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