Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e1d83dec15d881b…

MALICIOUS

PDF

35.0 KB Created: 2020-05-13 16:03:33 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9ea69b63556a3b02a8bb63a5fad14ade SHA-1: 7cca7e209e21eb389c2481b9c0ba05bfdc90de76 SHA-256: 8e1d83dec15d881bfc1381c5d1301caec23f93566387e3bf804093d26fa37580
92 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a link farm or SEO spam, designed to drive traffic to numerous external websites. The document body, though heavily obfuscated, contains references to a "good study bible app for android" and numerous URLs, suggesting a lure to potentially malicious or unwanted content. The PDF_SEO_LINK_FARM heuristic firing confirms the presence of a mass external link farm within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://kohno-corp.com/uploads/1/3/0/8/130873918/130873918.html#good+study+bible+app+for+android
    • http://acase-au.com/uploads/1/3/0/3/130313306/kaveleguvi_norexepiku.pdf
    • http://bluegreyinc.net/uploads/1/3/0/4/130436188/9114483.pdf
    • http://frontdeckentertainment.com/uploads/1/3/1/4/131483337/busolomifitam-mabakiwo-sinoloxi-kilovezivo.pdf
    • http://pro-hillclimbers.org/uploads/1/3/0/4/130435771/jewojuwigirerit_veganaxajes.pdf
    • http://texastasteofheaven.com/uploads/1/3/0/6/130639552/7539561.pdf
    • http://meridenoilcompany.com/uploads/1/3/0/4/130483243/7965156.pdf
    • http://minitoyhuskies.org/uploads/1/3/0/3/130323337/xuwojoxoz.pdf
    • http://greatershow.com/uploads/1/3/1/4/131456363/8888036.pdf
    • http://to-bargains.us/uploads/1/3/1/3/131381414/2681995.pdf
    • http://phases-rec.com/uploads/1/3/1/0/131070247/negul-jotutotiw-voberuka.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_off00005eb0.bin
35fc28d9ce6d975a8bf714509c3f25cb070c79ae50f89d04bf9b70feb3b0c734		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB0 10008 bytes

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