Malicious PDF — malware analysis report

Static analysis result for SHA-256 879d5bf5ff984bd0…

MALICIOUS

PDF

50.1 KB Created: 2020-08-08 11:01:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d7497d89b136630fdbaf0458586bdca SHA-1: 6a8b9f20240a0781cac04d091631da970afd16f0 SHA-256: 879d5bf5ff984bd0970e1b6b23ae35a975a3ac2ecf5d1abf43958254dd665fb4
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with 13 identified as part of a link farm. One of these links, 'https://ttraff.cc/pify?keyword=hinayana+buddhism+pdf', is flagged as a known malicious redirector. The presence of numerous links suggests an attempt to manipulate search engine results or distribute malicious content, aligning with a phishing or SEO abuse attack pattern. No scripts were extracted, and the document body was heavily obfuscated.

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=hinayana+buddhism+pdf
    • http://files.christianlindke.com/uploads/1/3/1/8/131871622/7936485.pdf
    • http://files.soinlauve.com/uploads/1/3/0/7/130738657/bebuj.pdf
    • http://files.braverybox.com/uploads/1/3/0/7/130775228/denuxisamojajovolo.pdf
    • https://cdn.shopify.com/s/files/1/0433/1818/2041/files/pattern_making_books_for_fashion_design.pdf
    • https://cdn.shopify.com/s/files/1/0435/7960/5147/files/xbox_one_dns_codes_gta_5.pdf
    • https://cdn.shopify.com/s/files/1/0430/9362/2935/files/welixosopajomubugow.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/mifolosazamivelusig.pdf
    • https://cdn.shopify.com/s/files/1/0433/7732/8278/files/priority_order_of_functional_groups.pdf
    • https://cdn.shopify.com/s/files/1/0438/3558/8770/files/mechanics_of_materials_6th_edition_solution.pdf
    • https://cdn.shopify.com/s/files/1/0436/4658/2944/files/lojudomavudovuxalute.pdf
    • https://cdn.shopify.com/s/files/1/0429/7526/4919/files/89902867883.pdf
    • https://cdn.shopify.com/s/files/1/0427/7154/6279/files/wagazi.pdf
    • https://cdn.shopify.com/s/files/1/0429/7854/1722/files/peranarezet.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_off00008694.bin
9f4bac6f089575b7d1ba24369611d951f627473ebc0392d497857ded129ec4d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8694 5356 bytes
font_01_sfnt_off000098a6.bin
90d852b99ef8a3e9ec1e4d612680e3e522d9c8e288e47cb0eb0339527a2323c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98A6 9904 bytes

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