Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e9c50d584b9306c…

MALICIOUS

PDF

36.0 KB Created: 2020-03-21 18:28:57 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 870add25a2833058cc6988cd922ecf35 SHA-1: 9f415003869382f4daac391112034a672af2cc02 SHA-256: 3e9c50d584b9306cf9f4d8c9f2e5a202a94efc5dad9fb58b15affda31bd75db6
62 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, a technique commonly used for SEO spam or to redirect users to malicious websites. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, indicating a likely attempt to manipulate search engine results or distribute further malware. The document body itself contains garbled text and references to educational materials, suggesting a lure to disguise the malicious intent.

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://chuzhappy.com/uploads/1/3/1/0/131069763/131069763.html#glencoe+mcgraw+hill+algebra+1+workbook+pdf
    • http://kelseyleonofficial.com/uploads/1/3/0/2/130272232/a62818eb85db.pdf
    • http://www.palkonparties.com/uploads/1/3/0/2/130288864/8821789.pdf
    • http://blackoutpoems.com/uploads/1/3/0/6/130620651/jesevikumu-niwujob.pdf
    • http://musictheoryacademy.net/uploads/1/3/0/5/130588594/4db31d039baffe4.pdf
    • http://silveretconline.com/uploads/1/3/0/5/130545194/8382951.pdf
    • http://www.meechieblessboostcreditllc.com/uploads/1/3/0/6/130620951/8004656.pdf
    • http://trubluelocal.com/uploads/1/3/0/6/130620387/rawofetabigokujofub.pdf
    • http://cairns-holiday-apartments.com/uploads/1/3/0/7/130776394/majurot_xufuzanazer_vugikel_diwezolaxedig.pdf
    • http://www.carolineschool.com/uploads/1/3/0/7/130739661/2ea1ea35.pdf
    • http://ordinariatesouthmanchester.com/uploads/1/3/0/5/130590366/c03638c.pdf
    • http://www.millswoodbooks.com/uploads/1/3/0/6/130620923/xepezimabasixuj.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006298.bin
100789ece7d12698f0cfaf8807af00376b4e576373e6db146ab754679d75e667		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6298 7916 bytes

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