Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd6ee775931209e5…

MALICIOUS

PDF

38.8 KB Created: 2020-08-25 03:03:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66177312e8a87626a4a31133c6e92b7a SHA-1: 11fec8106dae00456b1e4d2cc62a065e1b3f2452 SHA-256: bd6ee775931209e590829b3bfc0a79d6e24ac81ba2a17b1ebee434bd3af9a76d
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=confluence+command+line+interface'. Another heuristic flagged the document as a link farm, with 17 external PDF links, suggesting an attempt to manipulate search engine results or distribute content across multiple sites. The document body, though heavily obfuscated, contains references to these URLs.

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=confluence+command+line+interface
    • http://tubib.sunshinecoins.com/uploads/1/3/1/4/131406062/kowuk.pdf
    • http://files.sandbachosteopaths.com/uploads/1/3/0/7/130739480/7799057.pdf
    • http://files.biosolutions.co.nz/uploads/1/3/1/3/131382470/sanetefej.pdf
    • https://cdn.shopify.com/s/files/1/0431/1914/9216/files/pictures_of_medicinal_plants_with_names_and_uses.pdf
    • https://cdn.shopify.com/s/files/1/0438/3267/2413/files/bikigisawowo.pdf
    • https://cdn.shopify.com/s/files/1/0435/2363/7402/files/83904369698.pdf
    • https://cdn.shopify.com/s/files/1/0439/4539/4331/files/anestesia_local_em_odontologia.pdf
    • https://cdn.shopify.com/s/files/1/0430/9486/8122/files/noxosubowoz.pdf
    • https://cdn.shopify.com/s/files/1/0432/7063/5680/files/woneboralarej.pdf
    • https://cdn.shopify.com/s/files/1/0429/1028/5983/files/ti89_titanium_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/3178/1791/files/punekatunefutemika.pdf
    • https://cdn.shopify.com/s/files/1/0433/7238/0318/files/8789191738.pdf
    • https://cdn.shopify.com/s/files/1/0429/0553/4620/files/diwakotefejikunug.pdf
    • https://cdn.shopify.com/s/files/1/0429/6140/4060/files/wowosepagifeji.pdf
    • https://cdn.shopify.com/s/files/1/0427/7462/6470/files/nodesekapigeku.pdf
    • https://cdn.shopify.com/s/files/1/0439/1701/7256/files/23566400515.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31688109027.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_off000059f7.bin
af940705b07731d2e5b509117b97dd1e871fc42b2ea89cd6015c8c0cd5a6c000		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59F7 4896 bytes
font_01_sfnt_off00006a7f.bin
8a404d981ce53dccb94428302632846215f87e5d7cb134779d268f8262f56d52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7F 10512 bytes

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