Malicious PDF — malware analysis report

Static analysis result for SHA-256 2acc7d44146e1d49…

MALICIOUS

PDF

46.3 KB Created: 2020-08-25 10:29:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68141c414a6310540d3d150e424ed1ff SHA-1: b1a6e442b71ec1df45ae244993101035069a6eca SHA-256: 2acc7d44146e1d49df920a8ee16dc15bd01fea278ad457e8d881d47b25940e34
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it is a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the text 'Report layout design free' and the malicious URL. The file also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, many hosted on Shopify. The primary malicious URL is 'https://ttraff.com/pify?keyword=report+layout+design+free', which likely serves as a lure to redirect users to further malicious content.

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.com/pify?keyword=report+layout+design+free
    • http://momozip.incredimailhelpdesk.com/uploads/1/3/2/3/132303382/zivevamix.pdf
    • http://vidikez.preecelightning.com/uploads/1/3/1/4/131407995/10da25083082a07.pdf
    • http://files.lifespirepa.com/uploads/1/3/1/3/131397955/4127110.pdf
    • https://cdn.shopify.com/s/files/1/0434/9755/4084/files/86723598711.pdf
    • https://cdn.shopify.com/s/files/1/0438/3971/7538/files/vidaw.pdf
    • https://cdn.shopify.com/s/files/1/0434/9765/2376/files/99997397957.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23281911610.pdf
    • https://cdn.shopify.com/s/files/1/0437/6359/7466/files/seated_core_exercises_for_seniors.pdf
    • https://cdn.shopify.com/s/files/1/0432/2341/6995/files/shopify_templates_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/3913/7702/files/libro_zend_avesta.pdf
    • https://cdn.shopify.com/s/files/1/0433/6500/7509/files/66329489033.pdf
    • https://cdn.shopify.com/s/files/1/0437/4691/8551/files/cancionero_folklorico_con_acordes_para_guitarra.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_off000078bc.bin
653d60c3af28b6eaf3c043c4d65049d1e04b0176e2b68729d88f41bda4b672a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78BC 5316 bytes
font_01_sfnt_off00008af1.bin
71a0bce763423c7f6ae8795613f569150a170bdcbde9b0840321fead9888aa6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF1 9948 bytes

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