Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3454bd153168a9c…

MALICIOUS

PDF

39.5 KB Created: 2020-08-24 17:04:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 508d3ede5305369a7a6156ee5bd8fc37 SHA-1: b433715848493bf523203b1cf2bbf3df2cbe806f SHA-256: d3454bd153168a9c423cb3f12ac500f28643a4ff58d140b70c8231c5d1b34eea
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, includes the URL 'https://ttraff.ru/pify?keyword=half+and+quarter+of+shapes+worksheet', suggesting a lure to a malicious site. The presence of numerous other links, many hosted on Shopify, indicates a link farm or a method to obscure the final malicious destination.

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=half+and+quarter+of+shapes+worksheet
    • http://files.mackcommunications.com/uploads/1/3/2/6/132681054/66f99.pdf
    • http://files.bankstowntm.com/uploads/1/3/1/8/131856205/b833e564.pdf
    • http://wanopug.tmjempowers.com/uploads/1/3/1/4/131405927/2468609.pdf
    • http://files.paganscrapbooksupply.com/uploads/1/3/1/3/131398380/lamegapegenonabegeju.pdf
    • https://cdn.shopify.com/s/files/1/0436/0211/6772/files/isometric_projection_problems_answers.pdf
    • https://cdn.shopify.com/s/files/1/0435/0276/4184/files/baloten.pdf
    • https://cdn.shopify.com/s/files/1/0433/6674/4216/files/32050524830.pdf
    • https://cdn.shopify.com/s/files/1/0437/1762/3957/files/83022712336.pdf
    • https://cdn.shopify.com/s/files/1/0432/0791/7729/files/mikhail_botvinnik_books.pdf
    • https://cdn.shopify.com/s/files/1/0429/0550/1852/files/fibipejosoju.pdf
    • https://cdn.shopify.com/s/files/1/0430/5934/7618/files/bipuxora.pdf
    • https://cdn.shopify.com/s/files/1/0434/7199/5033/files/75740180974.pdf
    • https://cdn.shopify.com/s/files/1/0437/5393/0901/files/all_halo_reach_ranks.pdf
    • https://cdn.shopify.com/s/files/1/0430/3755/6889/files/wow_classic_mystery_meat_recipe.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_off00005d43.bin
49d7d65562361794665caf2bcfe09fd671cffe5772f821e615194372a9699c8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D43 5372 bytes
font_01_sfnt_off00006f8d.bin
0e60529aa2660f72ba01a77073a448fe4f9639c9480ad6137cfa6cddcebb1715		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8D 9960 bytes

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