Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f866a9cfeb2dc45…

MALICIOUS

PDF

43.3 KB Created: 2020-08-02 17:33:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b129185d6a1078a6e826a3e4f574022e SHA-1: 62a49ebad3fad4faa76ebab456d6b38e3b1b5812 SHA-256: 3f866a9cfeb2dc45b3c6c7041a8121cede7cfc6d831808dc11362ecb0c791f7b
150 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, forming a link farm. One of these links directs to a known malicious redirector, 'https://ttraff.cc/pify?keyword=5e+protection+domain', which likely leads to further malicious content. The presence of numerous external links, many pointing to PDF files on various domains, suggests a tactic to distribute malicious content or engage in SEO manipulation for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=5e+protection+domain
    • http://files.arcaneodyssey.com/uploads/1/3/0/7/130776075/9354949.pdf
    • http://files.michaelfridgen.com/uploads/1/3/0/7/130775965/77771da3f05dac3.pdf
    • http://files.pagemusicale-lfs.com/uploads/1/3/0/9/130969061/zowokowekalidibowod.pdf
    • http://files.whitehorsevenue.com/uploads/1/3/0/7/130775997/vajadelogivofedem.pdf
    • http://files.printer-graphics.com/uploads/1/3/1/3/131380297/xidoliboluto.pdf
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/pesuxodifeluguse.pdf
    • https://cdn.shopify.com/s/files/1/0435/5234/2184/files/lopor.pdf
    • https://cdn.shopify.com/s/files/1/0434/9073/8328/files/lawojumobabojuwi.pdf
    • https://cdn.shopify.com/s/files/1/0435/3271/4139/files/63839216309.pdf
    • https://cdn.shopify.com/s/files/1/0434/4902/4669/files/15544485593.pdf
    • https://cdn.shopify.com/s/files/1/0432/8371/0117/files/zasivewamopop.pdf
    • https://cdn.shopify.com/s/files/1/0435/1783/7467/files/nawukibamukojuresivigum.pdf
    • https://cdn.shopify.com/s/files/1/0430/2195/9325/files/filakuzitarogirumupim.pdf
    • https://cdn.shopify.com/s/files/1/0429/6926/8383/files/dakazox.pdf
    • https://cdn.shopify.com/s/files/1/0436/0945/6803/files/50872786713.pdf
    • https://cdn.shopify.com/s/files/1/0440/7469/6856/files/1605675345.pdf
    • https://cdn.shopify.com/s/files/1/0430/4456/9242/files/12139138851.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_off000064c5.bin
22d439a48bb669e5b7ee4d3ee6b431753bbe3058a9f8b6ba07a5724b33f058d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64C5 5040 bytes
font_01_sfnt_off000075d0.bin
a0786733e33673ba337aa15e2fe46a07048727c1ccaf34fb2624b1634d61ec34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75D0 13532 bytes

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