Malicious PDF — malware analysis report

Static analysis result for SHA-256 abc9800da121f638…

MALICIOUS

PDF

63.3 KB Created: 2020-08-20 06:23:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba1d8b60ef184a5c9284a526d4e6d5f9 SHA-1: 57a796a096bbf26c595255f1af7bf0965766bf46 SHA-256: abc9800da121f63884cfb05fcca3b066f453edc83ee4bee9b6f5651cc55f9cd4
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with many pointing to external PDF files hosted on Shopify. One of these links, https://ttraff.com/pify?keyword=von+borland+delphi+6+personal, redirects to a known malicious domain, indicating a likely phishing or malware distribution scheme. The ML classifier also flagged this PDF with high confidence.

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.com/pify?keyword=von+borland+delphi+6+personal
    • http://files.halesforklift.com/uploads/1/3/1/4/131453031/nizokil.pdf
    • http://xemewot.026futbolclub.com/uploads/1/3/0/7/130775537/3162453.pdf
    • https://cdn.shopify.com/s/files/1/0432/6142/7876/files/ligurutesumuzila.pdf
    • https://cdn.shopify.com/s/files/1/0431/2553/8980/files/tagokupalo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4361/8965/files/34465838441.pdf
    • https://cdn.shopify.com/s/files/1/0431/7777/1164/files/49718078572.pdf
    • https://cdn.shopify.com/s/files/1/0435/2635/7152/files/heat_transfer_solution.pdf
    • https://cdn.shopify.com/s/files/1/0432/0450/9853/files/80715128979.pdf
    • https://cdn.shopify.com/s/files/1/0428/1732/3175/files/22111106041.pdf
    • https://cdn.shopify.com/s/files/1/0431/8766/7104/files/44967191523.pdf
    • https://cdn.shopify.com/s/files/1/0431/2806/2103/files/2278201644.pdf
    • https://cdn.shopify.com/s/files/1/0431/2278/6466/files/sublime_text_project.pdf
    • https://cdn.shopify.com/s/files/1/0431/4398/7361/files/23600277559.pdf
    • https://cdn.shopify.com/s/files/1/0435/8383/2227/files/44175437711.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_off0000b8f9.bin
298c0c9664091c4c5566aa271fe97a46f98eb9b1f963eb5082851ad6f01ea021		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB8F9 5304 bytes
font_01_sfnt_off0000caec.bin
b1a72cbd64f151ff6138c20d5abdbb6a34bc21ca4e2121f8694ec6f93055dbd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCAEC 11448 bytes

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