Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebbeaf49b6aaca3f…

MALICIOUS

PDF

61.0 KB Created: 2021-08-22 00:19:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: cbb99317162890d74ead3cc77fc3c6cc SHA-1: 87747244ed4587a67c2e27a77b59e13a8923301c SHA-256: ebbeaf49b6aaca3f62fc08a5b5b3e104cba44a6520f128553d76bfa829815d7e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to numerous compromised WordPress sites, likely intended to redirect users to malicious content. The presence of external URIs and a link farm structure strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6935

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 https://synerhu.ru/uplcv?utm_term=how+to+read+military+hearing+test+results PDF link annotation
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610b38fc589e6---larelulawemixoxosa.pdfIn PDF document text
    • http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/16120395edea0d---67570477853.pdfIn PDF document text
    • https://aljazeerahpetroleum.ae/userfiles/files/70237866239.pdfIn PDF document text
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/526ff8912505f7b97e65ffc6b87cc8df/38288559477.pdfIn PDF document text
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611779f0bd427---batubud.pdfIn PDF document text
    • https://nikolsbeauty.com/webroot/f/uploads/file/10177518012.pdfIn PDF document text
    • https://uleshuzataruhaz.hu/files/file/52612391187.pdfIn PDF document text
    • http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b28c920131d---75471779504.pdfIn PDF document text
    • https://bandai-k.com/userfiles/file/32514853157.pdfIn PDF document text
    • http://costruzionibulagna.it/userfiles/files/15213042241.pdfIn PDF document text
    • http://storemisr.com/uploads/files/jabupikixalexaza.pdfIn PDF document text
    • http://ohmamakitchen.com/uploads/files/56581477394.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/160b5cb19977c6---84115513060.pdfIn PDF document text
    • http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f52365cd0e---sasegoxowufobavuwowikim.pdfIn PDF document text
    • https://www.arphplumbing.co.uk/wp-content/plugins/super-forms/uploads/php/files/rdfbocclb26cmjflee14o20ptd/vanizijadutafifasudifase.pdfIn PDF document text
    • http://longchimvac.net/app/webroot/uploads/files/jomurowosurepofagi.pdfIn PDF document text
    • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/d44e6858a5a7b69d348405b46517e2aa/98509214290.pdfIn PDF document text
    • https://webfox.net.au/wp-content/plugins/super-forms/uploads/php/files/01fa4812a4f5f285e3bac55800ad4009/59280607348.pdfIn PDF document text
    • http://tomaszfilipczak.pl/userfiles/file/diviguzigij.pdfIn PDF document text
    • https://stradatextiles.com/upload/ckfinder/files/32095059060.pdfIn PDF document text
    • http://rigassprotes.lv/uploadz/file/59237595296.pdfIn PDF document text

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