Malicious PDF — malware analysis report

Static analysis result for SHA-256 df946d5cdc7d5851…

MALICIOUS

PDF

44.3 KB Created: 2020-04-05 03:30:38 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8a7272112d4fadc5770d8100564f73c9 SHA-1: d3e9caa362e56862a7c65a1223c27cbc28e0b87c SHA-256: df946d5cdc7d5851899322f7dadcd13027fdb5e68b506da0df469676bc90adea
62 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a link farm, indicating a large number of external links embedded within the document. The document body mentions 'Instalar un programa en kali linux', suggesting a lure to trick users into visiting potentially malicious sites. The embedded URLs are likely used to host further malicious content or redirect users to phishing pages.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://cyclebavaria.com/uploads/1/3/0/6/130640062/130640062.html#instalar+un+programa+en+kali+linux
    • http://nourishingbellies.com/uploads/1/3/0/8/130874180/zenasaki.pdf
    • http://acupuncturepregnancynyc.com/uploads/1/3/0/6/130621634/6301293.pdf
    • http://abenyang.com/uploads/1/3/0/4/130436354/bepinokoxowe.pdf
    • http://ryanrmohammed.com/uploads/1/3/0/5/130551512/noxap-zaduzanifijo-selumazusewawe-ralejumevep.pdf
    • http://mistyislandbernese.com/uploads/1/3/0/4/130476555/tofaletepefawa.pdf
    • http://couverturesjoliette.ca/uploads/1/3/0/5/130545096/a40f79b.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_off00006c82.bin
31e1efbdbf69392174a60113d935739b8aef5005644eea9eae4038ce63403523		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C82 9556 bytes
font_01_sfnt_off00008edb.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EDB 16036 bytes

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