Malicious PDF — malware analysis report

Static analysis result for SHA-256 db68bd98f07af698…

MALICIOUS

PDF

43.8 KB Created: 2020-08-11 23:52:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: abcbb264f31b21c5141f6252b9ca5791 SHA-1: f2f276fe8e9493588ee6c4c65a3b789423e6e0dc SHA-256: db68bd98f07af698b60106fd1188a7a69a820155c8af3ac95c50049c7ea8bccd
150 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, also contains the 'ttraff.com' URL, suggesting it is the primary malicious payload delivery mechanism. No scripts were extracted, but the presence of a malicious redirector indicates an attempt to lure the user to a harmful external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=abruptio+placentae+%25E0%25B8%2584%25E0%25B8%25B7%25E0%25B8%25AD+pdf
    • http://files.kresscinema.com/uploads/1/3/0/7/130775634/5a9e53164f1a94c.pdf
    • http://files.gaiatreeshala.com/uploads/1/3/1/4/131406811/getuxisukuxalag.pdf
    • http://files.careholisticcenter.com/uploads/1/3/2/7/132741293/9dfec6a.pdf
    • https://cdn.shopify.com/s/files/1/0430/7727/1716/files/6981874906.pdf
    • https://cdn.shopify.com/s/files/1/0433/9315/5237/files/netezza_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gujogu.pdf
    • https://cdn.shopify.com/s/files/1/0440/8731/2536/files/noweroni.pdf
    • https://cdn.shopify.com/s/files/1/0431/6554/8708/files/pafesugitixatotojewugilis.pdf
    • https://cdn.shopify.com/s/files/1/0429/4017/0406/files/52883427809.pdf
    • https://cdn.shopify.com/s/files/1/0437/5671/6183/files/mipugajezi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9121/3980/files/toximuvewuvujiruzer.pdf
    • https://cdn.shopify.com/s/files/1/0428/0382/2755/files/kudanumuzas.pdf
    • https://cdn.shopify.com/s/files/1/0432/0044/6626/files/86547681704.pdf
    • https://cdn.shopify.com/s/files/1/0430/9454/0452/files/nuxazoxusipo.pdf
    • https://cdn.shopify.com/s/files/1/0433/1739/5611/files/69917290581.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d02.bin
7f03fd5e595329d92675014380ff5bc11934887a1c7e2c3257df7ae0181c06b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D02 5100 bytes
font_01_sfnt_off00005e5c.bin
cd5e481ffdf456c14e1948f217ee0edb361ceca691f28702da075feefd01b6a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E5C 6180 bytes
font_02_sfnt_off00006e56.bin
a210e223e7f068feff11e66141f49b252083a27d1ca58a88dcdfcc99b07b1f2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E56 6092 bytes
font_03_sfnt_off00007e27.bin
ed2a63f6308481ad349c72e27cfaa9b391a22074956bd3fa8c22a1384e58a6ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E27 9832 bytes

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