Malicious PDF — malware analysis report

Static analysis result for SHA-256 a712be820f2c62f9…

MALICIOUS

PDF

47.5 KB Created: 2020-08-01 22:08:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c543d92618749f7b86dddd64d0a2b22 SHA-1: 3b6f1e02baaac1ff911a85bb5acf27e6e405162d SHA-256: a712be820f2c62f91c4dc88897ed9a8fe7fad21fc1eb9b50b5b1d99551a067da
120 Risk Score

Malware Insights

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

The PDF was flagged for containing a large number of external links, suggesting a link farm or SEO manipulation tactic. One of the embedded URLs, 'https://ttraff.cc/pify?keyword=a+greedy+god+witcher+3', is identified as a malicious redirector. The document body contains garbled text and embedded URLs, further supporting the malicious nature of the file. No scripts were extracted, limiting the analysis of direct payload delivery mechanisms.

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=a+greedy+god+witcher+3
    • http://files.msert.net/uploads/1/3/2/6/132696330/luxevowito_foxudu.pdf
    • http://files.mbraveryarchitect.com/uploads/1/3/1/3/131380591/pifog.pdf
    • http://files.darkkentphotography.com/uploads/1/3/1/4/131437806/f729d868.pdf
    • http://files.chandao.co.uk/uploads/1/3/0/8/130814902/bonapawujowi.pdf
    • http://files.northlandquiltersguild.com/uploads/1/3/2/7/132712080/fezegawiv_wewitilifogad_nokoxiri.pdf
    • https://cdn.shopify.com/s/files/1/0432/6260/7518/files/99528973532.pdf
    • https://cdn.shopify.com/s/files/1/0438/3673/5650/files/kefiwemelenilesazu.pdf
    • https://cdn.shopify.com/s/files/1/0438/4138/8709/files/41761087671.pdf
    • https://cdn.shopify.com/s/files/1/0431/2806/2109/files/80635082570.pdf
    • https://cdn.shopify.com/s/files/1/0428/6539/3820/files/55488559456.pdf
    • https://cdn.shopify.com/s/files/1/0433/1647/8110/files/21939351074.pdf
    • https://cdn.shopify.com/s/files/1/0429/7824/6815/files/sewejomirebadozoxupixi.pdf
    • https://cdn.shopify.com/s/files/1/0439/4264/1832/files/36598724386.pdf
    • https://cdn.shopify.com/s/files/1/0440/1322/4094/files/19220303767.pdf
    • https://cdn.shopify.com/s/files/1/0434/7143/7984/files/60901712916.pdf
    • https://cdn.shopify.com/s/files/1/0430/9437/6605/files/6915953104.pdf
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/mefujavu.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_off0000721d.bin
201b69c14405a92a748bdbfd741e2d97fdd8b62a0f66b51e990ea838e930f0e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x721D 5128 bytes
font_01_sfnt_off000083af.bin
23f09f53b78234144b224fff483312ab4f71966ab68daef4a33ac7a991bd805f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83AF 14880 bytes

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