Malicious PDF — malware analysis report

Static analysis result for SHA-256 d713d14eb59080cf…

MALICIOUS

PDF

49.6 KB Created: 2020-08-21 14:56:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f17d2d445bbc79a046c14da8cdde35c SHA-1: e7a676d5c583adb8777318749648a1dfe8251403 SHA-256: d713d14eb59080cf5a781e93daf79cbb3fac8b384b53ed5c7aeba5b59eda3892
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, which points to 'https://ttraff.cc/pify?keyword=darkest+dungeon+wiki+provision+guide'. This URL is likely used to redirect users to a malicious site for phishing or malware delivery. The document also contains a large number of external PDF links, suggesting a link farm or SEO poisoning attempt. The document body, though heavily obfuscated, contains the malicious URL and other PDF links.

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=darkest+dungeon+wiki+provision+guide
    • http://files.kiwispoon.com/uploads/1/3/1/4/131408209/wajaxufix.pdf
    • http://mukona.bayareaflightinstruction.com/uploads/1/3/0/9/130969690/zakadogamov.pdf
    • http://dotojijop.greyandbird.com/uploads/1/3/1/3/131398140/2bfbbccd7245165.pdf
    • http://tisuk.chairpoetryevenings.org/uploads/1/3/1/4/131452883/7533191.pdf
    • http://files.alphadesign.studio/uploads/1/3/1/4/131437380/doribel_rutujozurifat_rivorab_tiropopo.pdf
    • https://cdn.shopify.com/s/files/1/0439/1773/8152/files/lekonibatifawiv.pdf
    • https://cdn.shopify.com/s/files/1/0428/6221/5324/files/basic_beliefs_of_islam_in_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6052/6246/files/darufunotopogubusosejapax.pdf
    • https://cdn.shopify.com/s/files/1/0431/6869/4432/files/nemozut.pdf
    • https://cdn.shopify.com/s/files/1/0438/5370/9472/files/edit_nightbot_commands.pdf
    • https://cdn.shopify.com/s/files/1/0430/7379/8306/files/torodemotobofovabufami.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52945462890.pdf
    • https://cdn.shopify.com/s/files/1/0428/2790/7239/files/26555430734.pdf
    • https://cdn.shopify.com/s/files/1/0438/2418/5506/files/70453239345.pdf
    • https://cdn.shopify.com/s/files/1/0432/5759/4011/files/what_are_mipmaps.pdf
    • https://cdn.shopify.com/s/files/1/0430/6845/7122/files/petawesabitorixopuloj.pdf
    • https://cdn.shopify.com/s/files/1/0434/0298/5626/files/vaxitasubijokiralub.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_off00007c32.bin
32114daec812f515aa7cad49256781b0205651c35f4fca5ddcbbc1f5efb92152		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C32 5308 bytes
font_01_sfnt_off00008e6f.bin
ef692266dbb820d63a9d88b08a14c98b58e3e28bb45420009c6ed194c85ae9f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E6F 13496 bytes

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