Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbb682035f8850fd…

MALICIOUS

PDF

47.8 KB Created: 2020-07-30 21:35:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6efe802d278f23a05d5b5c71553ac99f SHA-1: 66f43aa101b210e347d62d317f3807a0655265e1 SHA-256: bbb682035f8850fd286cd3320d90e5ac99ca9631a2502002323bc32ac3ba1c6e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used in SEO link farms to artificially boost search engine rankings or to distribute malicious content. One of the primary links directs to a known malicious redirector, ttraff.ru, which is likely used to obscure the final destination of the attack. The document body, though heavily obfuscated, contains text related to 'Sindrome de asperger ni os pdf', suggesting a lure to attract victims interested in this topic.

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=sindrome+de+asperger+ni%25C3%25B1os+pdf
    • http://files.allseasonsironworks.com/uploads/1/3/1/0/131070230/xoguniduwaget.pdf
    • http://files.caterobbins.net/uploads/1/3/0/8/130874369/7c2afb33a9.pdf
    • http://files.jameschristianimagery.com/uploads/1/3/1/3/131381919/netabenosojubuw-pomika-kelowewum-nojiguw.pdf
    • http://files.jamesch
    • https://cdn.shopify.com/s/files/1/0432/1506/1153/files/86309947542.pdf
    • https://cdn.shopify.com/s/files/1/0433/5108/1118/files/xijotigesigetuka.pdf
    • https://cdn.shopify.com/s/files/1/0432/4245/5207/files/sokusopaxegalosulejekeze.pdf
    • https://cdn.shopify.com/s/files/1/0437/4121/6919/files/texadegitowixuzi.pdf
    • https://cdn.shopify.com/s/files/1/0428/2135/3635/files/45867155260.pdf
    • https://cdn.shopify.com/s/files/1/0432/7879/4920/files/xafesevukexegarup.pdf
    • https://cdn.shopify.com/s/files/1/0430/0229/8521/files/zizogerovapabaterunuwuxu.pdf
    • https://cdn.shopify.com/s/files/1/0436/2154/8194/files/97952093050.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0078/files/93420478060.pdf
    • https://cdn.shopify.com/s/files/1/0431/3825/2957/files/zovalixexa.pdf
    • https://cdn.shopify.com/s/files/1/0430/6062/5562/files/57318585465.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_off000079a0.bin
1ab79f96bb35f84f29ed51bea68627a9bb8061e1b0a0c0637943831821950933		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79A0 5352 bytes
font_01_sfnt_off00008b61.bin
83e010c2f64d91e828a2247e303d6617405cb837641068f8b678239ca02bfe46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B61 11384 bytes

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