Malicious PDF — malware analysis report

Static analysis result for SHA-256 b04c82f0fa9da332…

MALICIOUS

PDF

44.0 KB Created: 2020-08-15 06:23:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a80e15d77f83f1ef0d9bcd35a9343079 SHA-1: eb5ed24e251daa7878d9535a4889ee7300991f4f SHA-256: b04c82f0fa9da332ae6342ef0a293264bb5a50fb13ebc8c269c98d6e0acb78b9
150 Risk Score

Malware Insights

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

The PDF file contains a link farm and a specific malicious redirector URL, 'https://ttraff.cc/pify?keyword=az+alkmaar+stadium+guide', disguised within the document body as a stadium guide. This indicates a social engineering attempt to redirect the user to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious.

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=az+alkmaar+stadium+guide
    • http://files.facethecolour.com/uploads/1/3/1/1/131164125/626ccabe.pdf
    • http://files.katherineking2001.com/uploads/1/3/2/3/132303314/deff4978a90d1.pdf
    • https://cdn.shopify.com/s/files/1/0433/6192/7318/files/dajubanimiwabimuretozus.pdf
    • https://cdn.shopify.com/s/files/1/0432/7286/3904/files/63428519714.pdf
    • https://cdn.shopify.com/s/files/1/0434/2058/2050/files/11474008047.pdf
    • https://cdn.shopify.com/s/files/1/0440/9635/6504/files/10597041966.pdf
    • https://cdn.shopify.com/s/files/1/0432/6221/4304/files/defaxemudesawinixasi.pdf
    • https://cdn.shopify.com/s/files/1/0435/0246/9285/files/vutomavewewisinitosoga.pdf
    • https://cdn.shopify.com/s/files/1/0440/3711/1973/files/jolopovuteri.pdf
    • https://cdn.shopify.com/s/files/1/0428/4832/1692/files/nujulokugebogomivebajikib.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e9d.bin
0ce5a9937764e81bf50152030ebd8f73373dad2d140e6ac6e4a7cdbcfd4c1a85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E9D 5248 bytes
font_01_sfnt_off00007061.bin
9228e9f1e00670ddd5b3126892b765785c92b6e04d5a1c901cbba002eb414b47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7061 10496 bytes
font_02_sfnt_off00009446.bin
d9fbcc704e3eb66e155f488c39a6efd40639a1223666a78f6d5a24de2da22c5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9446 4056 bytes

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