Malicious PDF — malware analysis report

Static analysis result for SHA-256 3783a11bce7f9666…

MALICIOUS

PDF

44.4 KB Created: 2020-04-05 02:50:14 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 61790b3ca645ab86ac48299bf924c944 SHA-1: 45f3adfc169345dff6545efd39ebd6faaf0d1bfd SHA-256: 3783a11bce7f96666c53a6177134aadbd56c13f4db6bf4b841254cda87d3b83b
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF document contains a large number of external links, a common technique for SEO poisoning or distributing malicious content. The document body, though partially corrupted, mentions 'Preparacion de medio de cultivo liquido' and includes URLs that appear to be part of a link farm. The primary heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting the document's purpose is to redirect users to potentially harmful sites. No scripts were extracted from this sample.

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://jonathanlifecoach.com/uploads/1/3/0/4/130488816/130488816.html#preparacion+de+medio+de+cultivo+liquido
    • http://bostoninnovationlearningcentre.com/uploads/1/3/0/6/130621202/fujike-zivojowijizo-nixufobi-ganefogemis.pdf
    • http://ldschainbreakers.org/uploads/1/3/0/5/130551338/8bea86f01153.pdf
    • http://allthingschildren.org/uploads/1/3/0/6/130640097/lamuzebobu.pdf
    • http://therecessproject.org/uploads/1/3/0/4/130488512/woxirakenupofojod.pdf
    • http://hcnurseryschool.org/uploads/1/3/1/3/131398574/9732188.pdf
    • http://californiawineryshuttle.com/uploads/1/3/0/6/130603889/gojibezisi_puputelegi_dupidonulopuz.pdf
    • http://propertasty.com/uploads/1/3/1/4/131437957/323197bbf7f9fcf.pdf
    • http://sindysthreads.com/uploads/1/3/1/3/131380983/xoxivepemowareb-segiwenavodab-kizegapobizurov-wulasefubaze.pdf
    • http://h4investments.com/uploads/1/3/1/3/131383893/5756687.pdf
    • http://jenreidphotoart.com/uploads/1/3/1/4/131408168/4125802.pdf
    • http://bronzedblisstan.com/uploads/1/3/0/4/130483123/lujewusubiguz-pajugodon-pamol-supizit.pdf
    • http://leejaemyung.org/uploads/1/3/0/6/130604951/4cd9adc9b3d078b.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_off00008172.bin
8fe2b13b514285433550dcdc806177076e7eb506250df5381ee02bdbbfc8d69c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8172 9296 bytes

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