Malicious PDF — malware analysis report

Static analysis result for SHA-256 8af22063c08a7567…

MALICIOUS

PDF

40.4 KB Created: 2020-08-11 13:48:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2afab4cf5e700d29ad708894246b989b SHA-1: cfdde7a9b5d3f86172ee1c5e9606328bbd854f41 SHA-256: 8af22063c08a75670c74d9b36a1ba7ec61f7c86339e6dfebcde8b43895b8a97b
130 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, identified as a link farm. One of the primary links directs to a known malicious redirector, ttraff.ru, which is likely used to obscure the final destination. While many other links point to Shopify, some of these are also PDFs, suggesting a complex redirection chain. The presence of urgency lures in the document body further supports a malicious intent to trick users into clicking these links.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=pdf+to+dwg+converter+freeware+online
    • http://guzibiju.fhsart.net/uploads/1/3/0/8/130874474/5300176.pdf
    • http://guleti.wildheartcamp.com/uploads/1/3/1/3/131379578/d721d618.pdf
    • http://lumugi.kilmarnockexpresidents.com/uploads/1/3/0/8/130874359/360939.pdf
    • https://cdn.shopify.com/s/files/1/0439/5309/4811/files/acrobat_reader_update.pdf
    • https://cdn.shopify.com/s/files/1/0430/5158/1597/files/dafojusavaxulamapomorama.pdf
    • https://cdn.shopify.com/s/files/1/0432/1338/9992/files/kitefisijakaluriwem.pdf
    • https://cdn.shopify.com/s/files/1/0450/6628/9302/files/cough_variant_asthma.pdf
    • https://cdn.shopify.com/s/files/1/0435/3641/6936/files/8738583059.pdf
    • https://cdn.shopify.com/s/files/1/0431/5345/7320/files/xabatabixurewavemoz.pdf
    • https://cdn.shopify.com/s/files/1/0428/5064/8223/files/rewowa.pdf
    • https://cdn.shopify.com/s/files/1/0433/9597/3276/files/15107953911.pdf
    • https://cdn.shopify.com/s/files/1/0432/8131/8056/files/30530670647.pdf
    • https://cdn.shopify.com/s/files/1/0430/6223/1201/files/oral_b_triumph_professional_care.pdf
    • https://cdn.shopify.com/s/files/1/0430/2353/2195/files/pasar_de_a_word_gratis_y_rapido_en_linea.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_off00005fac.bin
96913bed47f96ff6b79ef7958c75cc3eaf5dd7a3b2a0e4565013820690f37e3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAC 5164 bytes
font_01_sfnt_off0000715e.bin
135b8ea1531b361856edc651d088fe73bd185d19e9b558191d03c8c8a2ad4a21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x715E 10316 bytes

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