Malicious PDF — malware analysis report

Static analysis result for SHA-256 25b591a706a00e04…

MALICIOUS

PDF

51.3 KB Created: 2020-04-17 09:36:54 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7762c575d620c09b805e0cad8e72a820 SHA-1: 68bae4c714913187deb8419b055870158fd8a692 SHA-256: 25b591a706a00e0480346abf4c22a5b63ab77f88c8f17ee1db438b644708d54e
62 Risk Score

Malware Insights

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

The PDF file contains a link farm with numerous external URLs, indicating a malicious intent to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains a reference to 'Artritis reumatoide en pediatria pdf', suggesting a lure to attract victims. The presence of a PDF link farm is a strong indicator of malicious activity, likely aimed at distributing further malware or phishing content.

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://tartelaine.com/uploads/1/3/0/8/130813649/130813649.html#artritis+reumatoide+en+pediatria+pdf
    • http://dulielahart.com/uploads/1/3/0/6/130639157/zivezazudikiki_wozuxutit.pdf
    • http://crazycactuscreations.com/uploads/1/3/0/2/130289363/rirod.pdf
    • http://theoatmealpan.com/uploads/1/3/1/3/131398386/98e0f9db231072.pdf
    • http://micromulsion.com/uploads/1/3/0/7/130776249/womupi.pdf
    • http://taocostarica.com/uploads/1/3/1/4/131453312/4864009.pdf
    • http://pacific-ukulele.com/uploads/1/3/0/8/130813612/3c444a38eef1ef.pdf
    • http://www.breannavinsonphotography.com/uploads/1/3/1/6/131606890/losojebov.pdf
    • http://thechicostumes.com/uploads/1/3/0/4/130435570/wazajaza_davilibibu_gazil_pegetewimo.pdf
    • http://www.breannavinsonphotography.com/uploads/1/3/1/6/13160689
    • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009ed4.bin
44847761ca8e85a9aa558fbfde01ec79444c20fdbda7e0cff22728f3abe3b37c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9ED4 9144 bytes

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