Malicious PDF — malware analysis report

Static analysis result for SHA-256 d12f6546b20e5264…

MALICIOUS

PDF

43.9 KB Created: 2020-07-23 04:43:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 637404dd1a51d46bee65f112aaa8bea9 SHA-1: 0b4867ce9efda5cc1bcac81a025ff1cd4c60729e SHA-256: d12f6546b20e52644681c900e378ca0043deebc9b83711a30a15f2bd0c0a5f09
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, disguised as a Grundfos alldos dosing pump manual. This indicates a phishing attempt to direct users to malicious content. The PDF also contains a large number of external links, many hosted on Shopify, which is characteristic of SEO link farm abuse to obscure the true 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/wb?keyword=grundfos%20alldos%20dosing%20pump%20manual
    • http://files.fortdavisalabama.com/uploads/1/3/0/8/130874029/tapubisiwemarexikos.pdf
    • http://files.mikeseta.com/uploads/1/3/0/8/130874671/ec98c7b0e58edd.pdf
    • http://files.emteacher.com/uploads/1/3/2/6/132681694/829c802cc872a17.pdf
    • http://files.emteacher.com/uploads/1/3/2/6/132681694/829c802cc872a17.p
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/97777576557.pdf
    • https://cdn.shopify.com/s/files/1/0428/3429/6988/files/kotaweveximiga.pdf
    • https://cdn.shopify.com/s/files/1/0428/2338/5247/files/71136860840.pdf
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/memiwonez.pdf
    • https://cdn.shopify.com/s/files/1/0431/2858/6402/files/44795293121.pdf
    • https://zovaxageloj.files.wordpress.com/2020/07/tatewekisexutokorekidono.pdf
    • https://sonepegupevo.files.wordpress.com/2020/06/kojogufalokati.pdf
    • https://jizogozup.files.wordpress.com/2020/06/94128011417.pdf
    • https://talafup.files.wordpress.com/2020/07/23279758655.pdf
    • https://cdn.shopify.com/s/files/1/0431/0797/5335/files/xaromosunifegaf.pdf
    • https://cdn.shopify.com/s/files/1/0427/5575/2103/files/30795855765.pdf
    • https://cdn.shopify.com/s/files/1/0428/0814/8127/files/piwakaminiletaxa.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/44709126760.pdf
    • https://cdn.shopify.com/s/files/1/0437/2388/2650/files/45319138044.pdf
    • https://cdn.shopify.com/s/files/1/0428/1607/7991/files/juzevo.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_off00006f39.bin
7f5aeb61f66246d7a33ea79cda3d91ff0bfc48d6121a3e1ca15ac1571fa5502d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F39 5076 bytes
font_01_sfnt_off00008057.bin
16266894d0cdf8eee6e3b2f1190ac14f3a2ac3c7e13d932ed2ced62328997022		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8057 9928 bytes

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