Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5456ef0848ce922…

MALICIOUS

PDF

41.3 KB Created: 2020-08-16 18:49:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89c19f06684a960fef862e9147112186 SHA-1: c1ea78e35618688b2d5c0cf8245a42d398d268b2 SHA-256: e5456ef0848ce9221773e90fe660718e04f875d522249a5c7ba3ed5475aed0ed
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'botanical colour at your fingertips pdf'. The primary malicious URL identified is https://ttraff.ru/pify?keyword=botanical+colour+at+your+fingertips+pdf, which is likely used to redirect users to further malicious content. The presence of numerous Shopify links suggests an attempt to blend in with benign content while distributing malicious redirects.

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=botanical+colour+at+your+fingertips+pdf
    • http://kaxuzutez.pawneeil.net/uploads/1/3/1/6/131607240/vijoxufiratoraso.pdf
    • https://cdn.shopify.com/s/files/1/0429/9217/3217/files/tigodozosapupuzezetez.pdf
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/77692525830.pdf
    • https://cdn.shopify.com/s/files/1/0431/7777/1162/files/stripe_checkout_form_wordpress.pdf
    • https://cdn.shopify.com/s/files/1/0438/8611/7032/files/mh4u_key_quests.pdf
    • https://cdn.shopify.com/s/files/1/0433/7857/3464/files/20885613271.pdf
    • https://cdn.shopify.com/s/files/1/0431/6545/0389/files/madoka_magica_movie_4.pdf
    • https://cdn.shopify.com/s/files/1/0429/6245/2643/files/medivil.pdf
    • https://cdn.shopify.com/s/files/1/0431/1030/1847/files/makalah_akuntansi_perpajakan.pdf
    • https://cdn.shopify.com/s/files/1/0430/7664/9124/files/51118197421.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7416/files/3457082540.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_off000063db.bin
c7eab7d953d733904c148f100131666029aa36033904d64389c4e3b2fc2912a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63DB 5476 bytes
font_01_sfnt_off0000768e.bin
6ccdba6511e197dbaac4095ae9c6d243295a68fdf758bafd63b44dac354cc1e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x768E 10044 bytes

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