Malicious PDF — malware analysis report

Static analysis result for SHA-256 2650ed9da14401d5…

MALICIOUS

PDF

32.2 KB Created: 2020-08-21 17:39:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d6bf5e798b22f9ad9cf4f19fa19f149 SHA-1: 719281eb72e7ad21726a820d33b9dfb976bd48eb SHA-256: 2650ed9da14401d59ce4af9ecd58b0e46b8265933aa986b97e3f3b4bf13f3eb3
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 for a malicious redirector. The primary malicious URL identified is 'https://ttraff.ru/pify?keyword=joji+can%2527+t+get+over+you+free'. The document body appears to be corrupted or obfuscated, but the presence of the malicious link and the PDF_SEO_LINK_FARM heuristic strongly suggest an attempt to redirect users to malicious content, likely for phishing or 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=joji+can%2527+t+get+over+you+free
    • http://zenotap.codewisebc.com/uploads/1/3/1/4/131453945/5819515.pdf
    • http://puwujal.rushhourbiomedical.com/uploads/1/3/1/6/131606349/8135866.pdf
    • https://cdn.shopify.com/s/files/1/0436/4887/6697/files/fezotavufu.pdf
    • https://cdn.shopify.com/s/files/1/0432/9163/9974/files/chellame_chellam_endrai_song.pdf
    • https://cdn.shopify.com/s/files/1/0432/2207/3506/files/nisigotozoguzedalonuvin.pdf
    • https://cdn.shopify.com/s/files/1/0462/4603/5607/files/97294885802.pdf
    • https://cdn.shopify.com/s/files/1/0428/7306/1532/files/61933487932.pdf
    • https://cdn.shopify.com/s/files/1/0430/9866/9220/files/77939863395.pdf
    • https://cdn.shopify.com/s/files/1/0434/1638/7733/files/building_planning_and_design_books.pdf
    • https://cdn.shopify.com/s/files/1/0429/5150/8131/files/53169750374.pdf
    • https://cdn.shopify.com/s/files/1/0428/2023/9519/files/58227809583.pdf
    • https://cdn.shopify.com/s/files/1/0430/5348/2138/files/63195114934.pdf
    • https://cdn.shopify.com/s/files/1/0430/1737/1801/files/66064876923.pdf
    • https://cdn.shopify.com/s/files/1/0429/1005/6615/files/23604251255.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_off00004136.bin
2fde0f2fe719b1532fc2ffb3e68c9768fb6ca062b2851d8e26e7a6b25d82ada7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4136 5100 bytes
font_01_sfnt_off000052bb.bin
5fef7065445427d89f97ffb4553f6df974804e5cfac72cd4f8c820c246893203		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52BB 9764 bytes

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