Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b5abc510f316812…

MALICIOUS

PDF

45.9 KB Created: 2020-08-11 08:39:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b94965a41dd527d8ce928946a3592b0 SHA-1: 1bc50a6de525effb585baa02a184eeea3badf3de SHA-256: 7b5abc510f316812060676aaefd712fc12e005c097e42b74b3b649bf986ac91e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a mass of external links, with one specifically pointing to a known malicious redirector infrastructure. The document body text, though partially corrupted, includes the phrase 'Cadbury corporate governance pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. The primary malicious URL is https://ttraff.cc/pify?keyword=cadbury+corporate+governance+pdf, which is designed to redirect users to further 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=cadbury+corporate+governance+pdf
    • http://files.cottontailcottage.org/uploads/1/3/2/6/132682684/bd037915f2df22d.pdf
    • http://files.priceycentral.com/uploads/1/3/0/8/130813483/c58c68ee8fea937.pdf
    • http://files.helentclark.org/uploads/1/3/1/4/131455722/vunuzekosa.pdf
    • https://cdn.shopify.com/s/files/1/0435/9543/2099/files/130-_u.pdf
    • https://cdn.shopify.com/s/files/1/0428/5313/8591/files/87573477368.pdf
    • https://cdn.shopify.com/s/files/1/0433/9564/5589/files/12859334694.pdf
    • https://cdn.shopify.com/s/files/1/0434/4827/1000/files/28047099587.pdf
    • https://cdn.shopify.com/s/files/1/0428/8764/3302/files/kabomafukijonugutotu.pdf
    • https://cdn.shopify.com/s/files/1/0427/9091/2159/files/30146087096.pdf
    • https://cdn.shopify.com/s/files/1/0428/7086/6076/files/5907968371.pdf
    • https://cdn.shopify.com/s/files/1/0433/9079/5934/files/5300491162.pdf
    • https://cdn.shopify.com/s/files/1/0429/8702/8641/files/16352235763.pdf
    • https://cdn.shopify.com/s/files/1/0431/6335/3244/files/viwivoxadap.pdf
    • https://cdn.shopify.com/s/files/1/0434/1874/7036/files/tivepaduwitesunifinijexu.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_off00007669.bin
aabaf931db1258cab23f56bfe76b37ef7fb906b0d60548e024fd3c9da77c2edf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7669 5320 bytes
font_01_sfnt_off0000889f.bin
eec703fb8e675d0ddbf2c7cfacaa63efd2d73535a05ff8900b0705249d2d118d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x889F 9984 bytes

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