Malicious PDF — malware analysis report

Static analysis result for SHA-256 c02b78aa64ff0b09…

MALICIOUS

PDF

42.4 KB Created: 2020-08-18 13:22:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b016b6fdf3ae224e110ca88e3f3f02e SHA-1: 92021d5fd0506e661f402c7018fb39a825a40559 SHA-256: c02b78aa64ff0b0993beaacf49bb3b1968f702e3bcadced6d0f6a265322ec255
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though partially corrupted, contains text referencing a 'college application form html template' and includes the URL of the malicious redirector. This suggests the document is designed to trick users into visiting a malicious site, likely for credential harvesting or further malware delivery.

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=college+application+form+html+template
    • http://simis.fbcftogden.com/uploads/1/3/1/3/131378960/xogedazovukalonujud.pdf
    • http://wimuk.naturalneurofibromatosis.com/uploads/1/3/0/7/130739678/goxozazij.pdf
    • http://files.schstasteofthetown.com/uploads/1/3/0/7/130740211/c960a29.pdf
    • https://cdn.shopify.com/s/files/1/0434/8638/0189/files/57797782612.pdf
    • https://cdn.shopify.com/s/files/1/0434/3323/0488/files/gijusalakum.pdf
    • https://cdn.shopify.com/s/files/1/0437/1880/3605/files/35784395146.pdf
    • https://cdn.shopify.com/s/files/1/0431/0256/8599/files/sededevelatik.pdf
    • https://cdn.shopify.com/s/files/1/0432/3137/9619/files/66972388398.pdf
    • https://cdn.shopify.com/s/files/1/0434/2785/6536/files/48563541283.pdf
    • https://cdn.shopify.com/s/files/1/0433/7532/9441/files/magazine_telegram_channel.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c28.bin
4c323109b56b0695f0a331dab2f20ffcfb925ba85006cdb52c3ac2c89fce536c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C28 5060 bytes
font_01_sfnt_off00006d30.bin
424983fdc453bc3caee7f8c744a6eacbc579495d3019b901199e1da6430f9548		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D30 9992 bytes
font_02_sfnt_off00008f14.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F14 4324 bytes

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