Malicious PDF — malware analysis report

Static analysis result for SHA-256 afb2eeff3c4d28c2…

MALICIOUS

PDF

40.1 KB Created: 2020-08-15 03:08:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 560d553aebdf411a6f0ba73bad4d5fea SHA-1: d330a3f49d7580c71eeb59bf73920ef8f9d1ff56 SHA-256: afb2eeff3c4d28c2242748af7557ecf02025827a7a1de023c4e9b33966e5883b
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains references to educational material and URLs that appear to be part of a link farm designed to attract search engine traffic. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the presence of a link to malicious infrastructure.

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.com/wb?keyword=psychology%20of%20learning%20for%20instruction%20pdf
    • http://files.azcofchrist.org/uploads/1/3/2/6/132680867/ee2d4.pdf
    • http://files.alankendallmusic.com/uploads/1/3/1/3/131383934/9047129.pdf
    • http://files.eaa477.org/uploads/1/3/2/8/132814415/detalozez_xurenel_leladilelomug.pdf
    • http://dorujegex.eagletrax.com/uploads/1/3/0/8/130814995/fufinuzerafa.pdf
    • https://cdn.shopify.com/s/files/1/0430/5816/7959/files/maths_olympiad_books_for_class_8.pdf
    • https://cdn.shopify.com/s/files/1/0437/8938/5888/files/create_fake_cell_phone_bill_free.pdf
    • https://cdn.shopify.com/s/files/1/0439/2199/7979/files/24_season_2_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0430/2379/4337/files/2513696010.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30036161276.pdf
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/define_oliguria.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kevimofurerofujasopam.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_off00005dae.bin
aeeb5ffccca5fbb2a810920be6037a12ea3fcbbf2ba72dd3a2e466a2ed1a5dd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DAE 5520 bytes
font_01_sfnt_off00007068.bin
78e382e9ef2c54b70c7aaebf4e9a4ac3d283cd2724a2a54f8c8d42fa37a170c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7068 10296 bytes

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