Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4d706217143f1f0…

MALICIOUS

PDF

35.4 KB Created: 2020-08-02 17:41:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f5c1778f212f776eb18a6d4e772a9e6 SHA-1: 8ab3d833a61238d40843bfd7a1bc47afd9ae27e1 SHA-256: c4d706217143f1f067ff099cf0d0ff3ef094c32a3f6dc5bd26fda89d0f07e9bf
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The document body also contains a URL pointing to a redirector service, which is likely intended to lead the user to a malicious site. The presence of a large number of external links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility.

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=fortran+95+2003+for+scientists+engineers+pdf
    • http://files.musketeersgolfsociety.com/uploads/1/3/0/7/130740090/vetegevupotixo-vobonerivez-saberawafupipaz.pdf
    • http://files.djindyproductions.com/uploads/1/3/0/9/130969576/weful.pdf
    • http://files.igorkoruga.com/uploads/1/3/0/8/130874593/14da8133a.pdf
    • http://files.dsjones.org/uploads/1/3/1/1/131163976/sokuvatotufonabokig.pdf
    • https://cdn.shopify.com/s/files/1/0434/6321/3209/files/gebezowuwolinarojim.pdf
    • https://cdn.shopify.com/s/files/1/0438/0141/1744/files/8609020064.pdf
    • https://cdn.shopify.com/s/files/1/0433/6346/7414/files/76928105026.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3106/files/rakuwasugewijixoga.pdf
    • https://cdn.shopify.com/s/files/1/0431/7410/1149/files/59988727655.pdf
    • https://cdn.shopify.com/s/files/1/0432/4294/6728/files/56084842272.pdf
    • https://cdn.shopify.com/s/files/1/0428/0041/4883/files/24667250447.pdf
    • https://cdn.shopify.com/s/files/1/0430/2041/9226/files/77351587987.pdf
    • https://cdn.shopify.com/s/files/1/0433/0848/2724/files/wonajeji.pdf
    • https://cdn.shopify.com/s/files/1/0431/6237/0210/files/nedelovivaleg.pdf
    • https://cdn.shopify.com/s/files/1/0432/9704/6696/files/41797925924.pdf
    • https://cdn.shopify.com/s/files/1/0430/8421/8532/files/80692535751.pdf
    • https://cdn.shopify.com/s/files/1/0440/8714/8709/files/39659112649.pdf
    • https://cdn.shopify.com/s/files/1/0441/3282/7288/files/xepugazuw.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_off000049fb.bin
164002ed513a833241e08a9183bf2a52c58e453e887760235b79c6f8bd912e21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49FB 5964 bytes
font_01_sfnt_off00005e56.bin
65389e9da371597afb24dccdcb0d2be0850339e77d4d6bf472b43c76cd8c95a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E56 10020 bytes

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