Malicious PDF — malware analysis report

Static analysis result for SHA-256 debe0877ad37921c…

MALICIOUS

PDF

33.8 KB Created: 2020-08-27 16:52:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7de657d5b719c391e497632a679a0551 SHA-1: 41c992d16c7d7ef1c044f52bd4eb27515dbb6d74 SHA-256: debe0877ad37921c9c6a205efaa0aa6d182be59fe71cda765db7a773286d0a3d
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a malicious redirector. The primary malicious URL, https://ttraff.club/pify?keyword=ninja+cooking+system+cookbook+150+recipes, is designed to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains references to the cookbook lure and the malicious URL, reinforcing the social engineering attempt. The presence of numerous other PDF links suggests a link farm tactic to improve search engine ranking or distribute 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.club/pify?keyword=ninja+cooking+system+cookbook+150+recipes
    • http://files.driving--lessons--worcester.co.uk/uploads/1/3/0/7/130739590/9869445.pdf
    • https://cdn.shopify.com/s/files/1/0435/1275/8426/files/ranzcog_antenatal_screening_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0433/4754/2165/files/wireless_bluetooth_earbuds_for_android_phone.pdf
    • https://cdn.shopify.com/s/files/1/0434/0157/6615/files/eds_google_book_er_apk.pdf
    • https://cdn.shopify.com/s/files/1/0431/2023/0564/files/litimujeruxejoga.pdf
    • https://cdn.shopify.com/s/files/1/0437/9269/5458/files/4309456573.pdf
    • https://cdn.shopify.com/s/files/1/0433/6451/6005/files/gokunu.pdf
    • https://cdn.shopify.com/s/files/1/0435/3346/7807/files/tekobupasasotupenomesa.pdf
    • https://cdn.shopify.com/s/files/1/0436/9596/4328/files/bevubanuxuza.pdf
    • https://cdn.shopify.com/s/files/1/0434/7445/2632/files/81773305868.pdf
    • https://cdn.shopify.com/s/files/1/0438/1884/4322/files/linux_administrator_resume.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_off000044b0.bin
5cd7ecfb6e9a2a366ae616cc95f05932a1aca9673c84c9e9299ee06d700f49cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x44B0 5892 bytes
font_01_sfnt_off000058ba.bin
031046f0d9ab0ac652ba6959c926cfa524e801efe80cdac386827050c7e260e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58BA 10008 bytes

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