Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b8d633df3294358…

MALICIOUS

PDF

59.9 KB Created: 2020-08-15 22:09:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4723e18f182bf03cb4ae6177f9fe97cb SHA-1: c6321125889b0ebccef2d367d3468c89313af63c SHA-256: 9b8d633df3294358ddf2a447713b4f4a6d817a31b01b341b9a68b6155b92d67c
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, disguised as a manual for radiological safety. It also functions as a link farm, pointing to numerous other PDFs, many hosted on Shopify. The primary malicious URL is the entry point for the attack, likely leading to further malicious content or exploitation.

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=manual%20de%20procedimientos%20de%20seguridad%20radiologica
    • http://towedi.concepts2realities.com/uploads/1/3/0/9/130968931/dde5597077335c5.pdf
    • http://lujin.sdrm.shop/uploads/1/3/0/7/130776031/01873cbc4f.pdf
    • https://cdn.shopify.com/s/files/1/0430/2172/9955/files/wefomabi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7956/5465/files/releasing_your_potential_by_myles_munroe.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5804/files/munomitezovojope.pdf
    • https://cdn.shopify.com/s/files/1/0439/7917/8142/files/superman_returns_video_game.pdf
    • https://cdn.shopify.com/s/files/1/0429/5933/9674/files/bixamo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3546/7669/files/kimukavevun.pdf
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/14415431488.pdf
    • https://cdn.shopify.com/s/files/1/0431/5077/0342/files/water_supply_and_sanitary_engineering_by_birdie.pdf
    • https://cdn.shopify.com/s/files/1/0428/9904/6553/files/voxik.pdf
    • https://cdn.shopify.com/s/files/1/0437/7952/2722/files/acca_f9_kaplan_revision_kit.pdf
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/57695635525.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_off0000a823.bin
c88d0cdd8fb5e8d6413fdf1e0cc2fb3a5dd785580999cba4e5b2837f8adf444a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA823 5396 bytes
font_01_sfnt_off0000ba63.bin
341f1256568f677be04231659ce7758da43d38e0dc5e7bb79b08fcf8ad6c3f7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBA63 12260 bytes

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