Malicious PDF — malware analysis report

Static analysis result for SHA-256 820964be890ea06b…

MALICIOUS

PDF

44.8 KB Created: 2020-08-22 01:02:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59bd8250cab5e9e231fedb3005e2c069 SHA-1: eabdfad8460129c03938f6b1c98674a5df6ae166 SHA-256: 820964be890ea06ba8da7d552a2b37d25fb3cf04ff0a1d71833e4e1c7e5d075d
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=black%2527+s+law+dictionary+pdf+online'. This URL is designed to lure users by appearing to offer a legal dictionary PDF. The document also exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a malicious site.

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=black%2527+s+law+dictionary+pdf+online
    • http://files.palomarridge.com/uploads/1/3/1/3/131383791/8089584.pdf
    • http://vakuwi.alamedhirudotherapy.org/uploads/1/3/2/8/132816202/dc9e388fcc.pdf
    • https://cdn.shopify.com/s/files/1/0452/7502/1474/files/sawusidop.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/chirutha_telugu_full_movie_free_hd.pdf
    • https://cdn.shopify.com/s/files/1/0430/4017/8333/files/25599227962.pdf
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/74916612159.pdf
    • https://cdn.shopify.com/s/files/1/0435/5063/8229/files/jonathan_haidt_righteous_mind.pdf
    • https://cdn.shopify.com/s/files/1/0428/1345/6550/files/58795478385.pdf
    • https://cdn.shopify.com/s/files/1/0437/8119/3885/files/legifeki.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006203.bin
bf90e11a998e672de1fd6f85deeaf047b9ee662d15283d09a7d4db41218d2d18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6203 5280 bytes
font_01_sfnt_off00007418.bin
088f0e537a86abce818761cf4542698c9e1cdd8726fcedc81f6ed60e5fba1643		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7418 10896 bytes
font_02_sfnt_off0000988d.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x988D 4324 bytes

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