Malicious PDF — malware analysis report

Static analysis result for SHA-256 49c68e243233fe3f…

MALICIOUS

PDF

33.9 KB Created: 2020-08-06 19:05:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d1ccef2572b71e247a011d0adb55e83 SHA-1: a5119e6a6993bcafe911e7dd54ce41bfc79faf7e SHA-256: 49c68e243233fe3f33272c9ed5ae35d5cd081b644fce9afcdba1a37dd7fe0a1c
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous URLs. One critical heuristic identified a link to known malicious redirector infrastructure (ttraff.ru), suggesting an attempt to lure users to malicious sites. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing this finding. The presence of many Shopify-hosted links, while some are benign, is part of the overall link farm strategy.

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=materiales+ceramicos+libros+pdf
    • http://files.alisonjonesdentistry.com/uploads/1/3/0/8/130874218/9969473.pdf
    • http://files.emilykearnsphotography.co.uk/uploads/1/3/1/8/131856757/vufogog.pdf
    • http://bejare.benandrewsconsulting.com/uploads/1/3/0/7/130775195/0db3fb71784da.pdf
    • https://cdn.shopify.com/s/files/1/0434/1733/8005/files/three_days_grace_pain_mp3.pdf
    • https://cdn.shopify.com/s/files/1/0429/0209/3987/files/sadilanubotudi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7292/1503/files/discord_server_rules.pdf
    • https://cdn.shopify.com/s/files/1/0429/9892/3427/files/95467337733.pdf
    • https://cdn.shopify.com/s/files/1/0429/8424/3351/files/37838529852.pdf
    • https://cdn.shopify.com/s/files/1/0438/0046/1474/files/mini_international_neuropsychiatric_interview_italiano.pdf
    • https://cdn.shopify.com/s/files/1/0436/6788/2134/files/remajebewigajezupuxi.pdf
    • https://cdn.shopify.com/s/files/1/0428/1755/2543/files/nelepesafolopufonanamaweb.pdf
    • https://cdn.shopify.com/s/files/1/0437/4154/4599/files/35811032846.pdf
    • https://cdn.shopify.com/s/files/1/0439/3759/5560/files/63501694465.pdf
    • https://cdn.shopify.com/s/files/1/0432/7600/9622/files/jumulemibodutif.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_off000043f8.bin
d3515eaa3f0719624bbb9912ba638b66b8867512f7c19a8a13f298014974f84d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x43F8 5448 bytes
font_01_sfnt_off0000566c.bin
9e116109ba9272487215d19242374606336a940f38bd9dcb4ae1e7325e685ddd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x566C 10776 bytes

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