Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc6433590b54f838…

MALICIOUS

PDF

40.8 KB Created: 2020-08-21 07:05:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ee6e11d8552f501649b792711387ae6 SHA-1: 8c51aa59d5b27ea5733b14cda23c38db52cfcf02 SHA-256: cc6433590b54f8388f19ec3f3fc6754e5094183fae4f622372751cd18e1833a4
120 Risk Score

Malware Insights

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

The PDF file contains a deceptive document body masquerading as a capacity assessment form. It embeds numerous links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=capacity+assessment+form+2'. This redirector likely leads to a malicious payload or phishing site. The file also contains a large number of links to PDF files hosted on Shopify, likely part of a link farm to improve search engine ranking for malicious content.

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=capacity+assessment+form+2
    • http://files.jemskpropertyventuresinc.com/uploads/1/3/1/4/131453588/renugenisifaneb_ruwixeraxilij_jajef_kebev.pdf
    • https://cdn.shopify.com/s/files/1/0431/4464/2715/files/99273897667.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rexalomofovuwazeb.pdf
    • https://cdn.shopify.com/s/files/1/0431/7544/4631/files/97797316430.pdf
    • https://cdn.shopify.com/s/files/1/0433/6294/3127/files/xesupesikogunulakezap.pdf
    • https://cdn.shopify.com/s/files/1/0432/6850/5766/files/bemawe.pdf
    • https://cdn.shopify.com/s/files/1/0434/1425/7815/files/16262091507.pdf
    • https://cdn.shopify.com/s/files/1/0434/9113/1554/files/55617939615.pdf
    • https://cdn.shopify.com/s/files/1/0435/2560/3488/files/11836158740.pdf
    • https://cdn.shopify.com/s/files/1/0439/6436/7006/files/gebukupepajuzizomi.pdf
    • https://cdn.shopify.com/s/files/1/0462/6140/3802/files/buwixudilipokinilifufap.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_off00005c0d.bin
35bc6d9233a4c593968f96da84fc9db15bc77c0e82c8760a429fd40d63e0e293		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C0D 5268 bytes
font_01_sfnt_off00006deb.bin
baac927291358484e0d675026768372bd8dc351d86f34fe12791af38edae1773		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DEB 12652 bytes

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