Malicious PDF — malware analysis report

Static analysis result for SHA-256 eedb96b96b3f7284…

MALICIOUS

PDF

43.4 KB Created: 2020-08-27 22:22:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad566c036ecb911b369bc88723e170bd SHA-1: 2081a11312c5790c5401a3988e6778c3a3fe3f48 SHA-256: eedb96b96b3f7284bf4f5a63128b234d9a8c9456714aee7eb328269bb8be044f
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lead users to malicious content. The document body, though heavily obfuscated, contains references to the redirector URL and other URLs hosted on Shopify and various other domains, suggesting a link farm or SEO poisoning attempt to drive traffic. The ML classifier also strongly indicated maliciousness.

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.cc/pify?keyword=gta+san+andreas+cheats+playstation+2+weapons
    • http://betada.cbakerpaintings.com/uploads/1/3/1/4/131437252/xugug.pdf
    • http://files.catclayton.com/uploads/1/3/1/8/131856186/2021549.pdf
    • http://zedefu.cherokeecountyparks.com/uploads/1/3/0/8/130814328/wugidesafaxu.pdf
    • http://files.vioptometry.com/uploads/1/3/1/6/131606186/mojumusexegulu.pdf
    • https://cdn.shopify.com/s/files/1/0437/7480/4119/files/93555105659.pdf
    • https://cdn.shopify.com/s/files/1/0436/7394/4217/files/kagixokivatidinisi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1720/6946/files/numerical_linear_algebra_trefethen_free.pdf
    • https://cdn.shopify.com/s/files/1/0436/5297/2697/files/gowodojedulefajum.pdf
    • https://cdn.shopify.com/s/files/1/0431/7272/4897/files/pdf_split_and_merge_freeware_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/7320/0537/files/14183673083.pdf
    • https://cdn.shopify.com/s/files/1/0437/0956/3035/files/54125973179.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gumuwajufutoz.pdf
    • https://cdn.shopify.com/s/files/1/0436/3993/1038/files/sabex.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_off00006a5d.bin
71698870ab74c0cca94535a193664f8da2982d756a829e17d32ffbddbf9af6e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A5D 5516 bytes
font_01_sfnt_off00007d30.bin
83b20d4920a2c4ff191f6efbf2f29462034e313078b8bd3d3ffcd0c6381b7dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D30 10304 bytes

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