Malicious PDF — malware analysis report

Static analysis result for SHA-256 59f06a05893be2a2…

MALICIOUS

PDF

67.5 KB Created: 2020-08-31 21:19:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a87726f27f39765fe7a3e8a3c290b25 SHA-1: 92844db6357c44896788df2583f125b8e14038da SHA-256: 59f06a05893be2a2d520912b59d6d45c8e4a8ab64087d1e800975395af19ede0
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=ada+diabetes+pregnancy+guidelines'. This URL is presented within the document body, disguised as information related to 'Ada diabetes pregnancy guidelines'. The file also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on Shopify. The primary malicious intent appears to be directing users to the identified redirector.

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=ada+diabetes+pregnancy+guidelines
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/23622022383.pdf
    • https://cdn.shopify.com/s/files/1/0432/6778/4864/files/microelectronics_an_integrated_approach.pdf
    • https://cdn.shopify.com/s/files/1/0435/7718/0328/files/32488531180.pdf
    • https://cdn.shopify.com/s/files/1/0428/9937/4233/files/ear_acupuncture_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/8280/9508/files/rijezile.pdf
    • https://cdn.shopify.com/s/files/1/0431/0004/5469/files/24591396687.pdf
    • https://cdn.shopify.com/s/files/1/0436/4160/2198/files/10401283145.pdf
    • https://cdn.shopify.com/s/files/1/0437/5799/4142/files/algorithms_in_a_nutshell_a_desktop_quick_reference.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bdd4.bin
86d8452ae0b647ccb2ca57a94dc258552a5920357530e952e3b53667d9783856		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBDD4 5244 bytes
font_01_sfnt_off0000cfb4.bin
d3187bc1fa34a021e23cb68e8530dc338c461e5110d28bf31b7521d931c87015		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCFB4 10336 bytes
font_02_sfnt_off0000f308.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF308 4324 bytes

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