Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bef8ce91eee4ec2…

MALICIOUS

PDF

72.3 KB Created: 2020-08-12 13:44:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a1a9e7b5c493f006ac27ddab2403a0b SHA-1: b82dffade3cc056b070fde79652a9d1885fd26d0 SHA-256: 8bef8ce91eee4ec272349d98933d669eb6f4ad62ddd0d4447c7379e7b64fefac
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure via the URL https://ttraff.cc/pify?keyword=define+sanitation+pdf. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution.

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.cc/pify?keyword=define+sanitation+pdf
    • http://zamevigo.code4five.com/uploads/1/3/1/0/131070711/tuzitinesugos.pdf
    • http://xugewev.mfautodetail.com/uploads/1/3/1/8/131872225/gonibufu-tetugop-vapigubebawaxal.pdf
    • http://files.oaklandfootgolfclub.com/uploads/1/3/0/8/130874025/182f6dee6c2ab8.pdf
    • https://cdn.shopify.com/s/files/1/0431/4205/4048/files/dinavapevor.pdf
    • https://cdn.shopify.com/s/files/1/0432/9819/3573/files/barefoot_gen_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/7075/8820/files/lutegagawama.pdf
    • https://cdn.shopify.com/s/files/1/0438/0744/1053/files/micro_battle_servers.pdf
    • https://cdn.shopify.com/s/files/1/0433/5969/9109/files/xuramemetizabakuru.pdf
    • https://cdn.shopify.com/s/files/1/0433/5425/9610/files/wp_engine_disallowed_plugins.pdf
    • https://cdn.shopify.com/s/files/1/0435/8039/1585/files/sample_resume_for_fresher_accountant.pdf
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/30566288961.pdf
    • https://cdn.shopify.com/s/files/1/0434/0570/5374/files/nunewerokajixovima.pdf
    • https://cdn.shopify.com/s/files/1/0431/0653/3525/files/gizovavadowurijima.pdf
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/80627094420.pdf
    • https://cdn.shopify.com/s/files/1/0432/1512/6685/files/composite_numbers_1-_100.pdf
    • https://cdn.shopify.com/s/files/1/0429/6107/6387/files/past_authoring_program_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/3064/1826/files/42639211037.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_off0000da56.bin
6e6247576ed97a727cbf1cd1f4344360049569a18d741043ad07731db693ce3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA56 4904 bytes
font_01_sfnt_off0000eb20.bin
88ac46e45a4592e4cbf735b4f4e37be7c785027dcdd52fdc833b22585ad064cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB20 12316 bytes

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