Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b615a37c98e79c4…

MALICIOUS

PDF

49.2 KB Created: 2020-04-27 06:59:51 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 009636ea88edd50365156f81f1a840f5 SHA-1: fb7e80bb7bb7f6986c319d95c90d250e28f08819 SHA-256: 4b615a37c98e79c41c88e6505a8bbd03a7e6ad848a33fdc77dae92f01aa35d4f
102 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which appear to be part of an SEO link farm. The heuristic 'SE_LOLBIN_RUN_COMMAND' indicates that the document contains instructions for executing Windows scripting tools, suggesting an intent to run malicious code or redirect the user to harmful sites. The embedded URLs are likely part of this redirection chain.

Heuristics 4

  • 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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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://eliserodriguez.com/uploads/1/3/1/4/131438583/131438583.html#kiss+the+rain+flute+sheet
    • http://hockeysmysport.com/uploads/1/3/1/4/131438241/silefoweros.pdf
    • http://butzencreative.com/uploads/1/3/0/3/130379098/e0fa9611270c0b.pdf
    • http://osrsgpnow.com/uploads/1/3/0/6/130604550/xitivewapuzo_povefodifu_venotugoxatab.pdf
    • http://alumark-gerueste.de/uploads/1/3/1/4/131453119/43fd2.pdf
    • http://geissler.pro/uploads/1/3/0/6/130620543/fewetinezilexawexexa.pdf
    • http://searolf.org/uploads/1/3/0/4/130489841/2689e65612d352e.pdf
    • http://goodstreetbaptistchurch.net/uploads/1/3/1/3/131380636/4899413.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_off00008b6c.bin
bd2054431fb0cdcbb07e0cd5fecea2e0ea0ab07576ced80a6e65d09b64061e93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B6C 9456 bytes
font_01_sfnt_off0000af44.bin
84340d81b687e5658134e86d602934373e4edb1358290f916b35b324124d256a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF44 2696 bytes

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