Malicious PDF — malware analysis report

Static analysis result for SHA-256 47cb1bba30494162…

MALICIOUS

PDF

42.6 KB Created: 2020-08-19 16:26:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8513c9a80dacef7e6fa9ebfa185be2a SHA-1: dae891f939d15918c3a9b670692c291173206d0e SHA-256: 47cb1bba3049416212948397ad4188d440e868275af6e90914269e21fff5e29d
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=beverley+mclachlin+report'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the malicious URL and references to other PDF files, suggesting a lure to external content.

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.cc/pify?keyword=beverley+mclachlin+report
    • http://files.yellowstonecomputing.net/uploads/1/3/1/6/131606486/tinenujemol.pdf
    • http://files.thewelltraveledteacher.com/uploads/1/3/1/3/131381048/tuxij.pdf
    • https://cdn.shopify.com/s/files/1/0435/8438/9275/files/love_story_erich_segal.pdf
    • https://cdn.shopify.com/s/files/1/0429/0910/6335/files/36516148011.pdf
    • https://cdn.shopify.com/s/files/1/0434/7848/3097/files/newegaderepab.pdf
    • https://cdn.shopify.com/s/files/1/0433/8846/9398/files/74896002824.pdf
    • https://cdn.shopify.com/s/files/1/0434/3644/1767/files/52350947902.pdf
    • https://cdn.shopify.com/s/files/1/0432/7014/4166/files/60974550864.pdf
    • https://cdn.shopify.com/s/files/1/0431/3353/4357/files/94849108211.pdf
    • https://cdn.shopify.com/s/files/1/0433/2437/5194/files/nibimuwikixojinovo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2225/3205/files/nerve_growth_factors.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_off0000683e.bin
1add90cd5d000ce1694b183c5c5dd6a1d188f945ab2a6e57a8be318f259248b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x683E 5204 bytes
font_01_sfnt_off000079d1.bin
34814dc9ae1aa2254452454d4961c64d33697e876f0a474cb91c83be564fd7c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79D1 10680 bytes

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