Malicious PDF — malware analysis report

Static analysis result for SHA-256 f03e6be74ab22557…

MALICIOUS

PDF

57.4 KB Created: 2021-09-18 02:51:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f866a3b27434b6e40086d9d2172aab7a SHA-1: 6309731904ef74d9ecefcea615308fc6ef005ba7 SHA-256: f03e6be74ab225575c80a6c6c2a00ee03822b85aa7b51974f1298b5b2119bbb4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised or disposable domains, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the nature of the URLs and the heuristic firings point towards a spearphishing attachment attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7666

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://sapientgenerator.ru/files/userfiles/files/41147491739.pdf
    • http://toyotaquangninh.org/data/dulieu/files/90080782510.pdf
    • http://poaglasses.com/uploads/files/202109130807227129.pdf
    • http://imaginove.eu/data/Files/24685422399.pdf
    • http://babamoleskine.com/files/file/41834065982.pdf
    • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137d2e72a911---90680519597.pdf
    • http://agilesolutions.in/uploads/26556878113.pdf
    • http://dancephoto.ru/userfiles/files/sadubiso.pdf
    • http://web5gstore.com/Files/files/mugekadotavebefegexatoj.pdf
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613931bf2485a---36762081729.pdf
    • http://gtlmarinefuel.com/userfiles/file/88410732444.pdf
    • https://mcsfood.com/images/file/kafemepedipagofiwuxili.pdf
    • http://panhongbo.com/ckfinder/userfiles/site_eachfun_com/files/tuvawefa.pdf
    • https://pristineleather.com/userfiles/file/porose.pdf
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/ir5gdioniv32shj1l6cub33fv5/69287796411.pdf
    • http://mastervin.ru/files/file/jibimatomadotarolajijune.pdf
    • http://futuralagoparking.eu/userfiles/files/zupividogozuwivagox.pdf
    • http://oa30us.com/userfiles/file/50208123668.pdf
    • https://hobbyschuurtje-webwinkel.be/images/userfiles/file/senevipij.pdf
    • http://96rangjai.com/userfiles/file/20393389035.pdf
    • https://diedacorporation.net/freesiafiles/file/72971846030.pdf
    • https://hebatkeren88.com/contents/files/fiwug.pdf
    • http://sapientgenerator.ru/files/userfiles/files/lidenefuwijusunowobuvamo.pdf
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f4eb658e71---vevuxogalexovekarum.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=latest+version+of+chrome+for+windows+10

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