Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e37bb2404143305…

MALICIOUS

PDF

42.5 KB Created: 2020-09-01 00:51:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a7f405f9e8440ac6dcb672bcc62131c8 SHA-1: 8d9b08e5124ad02cebf995b2d469a32b7d6d17de SHA-256: 8e37bb2404143305a47121e44a13502a851f7c2c9c4ea83c1d225f2cf1a617c8
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.me/wix?keyword=gemological+science+international+report+check'. The document body also contains this URL, suggesting it is intended to lure the user to a malicious site. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm SEO tactic, likely to obscure the malicious redirector.

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.me/wix?keyword=gemological+science+international+report+check
    • https://cdn.shopify.com/s/files/1/0432/8361/1801/files/3193833068.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/danedogorolulefumatexa.pdf
    • https://cdn.shopify.com/s/files/1/0433/7994/9718/files/lupuka.pdf
    • https://cdn.shopify.com/s/files/1/0430/6350/9143/files/tadolosivoki.pdf
    • https://cdn.shopify.com/s/files/1/0429/9928/3863/files/45680708947.pdf
    • https://cdn.shopify.com/s/files/1/0436/1771/4334/files/beretta_92_full_auto_conversion.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20424522606.pdf
    • https://cdn.shopify.com/s/files/1/0437/1755/8426/files/geological_time_scale_file.pdf
    • https://cdn.shopify.com/s/files/1/0440/4055/2598/files/30252055665.pdf
    • https://cdn.shopify.com/s/files/1/0435/6122/2307/files/pebuwifuzuboziwedez.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_off0000662f.bin
a98e9c619c64e8642f9d9ba5ab72e068e5a52bb443410ea84bb290c67e5d7e42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x662F 5444 bytes
font_01_sfnt_off0000788d.bin
3b0eced51bcf2c2ebe88feaf01d5482827c97f95818e75e2d845652977ab31c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x788D 10760 bytes

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