Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bf0e335a22dd5fd…

MALICIOUS

PDF

47.8 KB Created: 2021-09-21 20:11:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b54ef1757309e71e181a231ff26e7ae0 SHA-1: dcdd2006f19f58b6498ce8f10ee92c881adf1581 SHA-256: 5bf0e335a22dd5fda06ccb93ffe95155ae5a182e4d9423cb54831067752f3607
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF contains embedded JavaScript and a large number of external links, many pointing to compromised WordPress sites. The document's structure and content suggest it is designed as a link farm to redirect users to malicious sites, likely for phishing or malware distribution. The embedded JavaScript is likely used to facilitate the redirection or exploit vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7126

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 47 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://santiagoporter.com/js/ckfinder/core/connector/php/files/puputawetaduzosufemumuze.pdf
    • http://mulroyenvironmental.ie/userfiles/file/rujotiwatabakenatogoma.pdf
    • http://sdhmladavozice.cz/userfiles/file/84292116901.pdf
    • http://xn----ftbkdcamitb5h.xn--p1acf/files/fck/file/bugenelifejopuluto.pdf
    • http://3qlohas.com/CKEdit/upload/files/42197476877.pdf
    • http://robertfeinberglaw.com/images/edit_images/file/namezujerezolazowufowa.pdf
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161433099bc17a---rewosoponitilufoviroxuni.pdf
    • https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/g12edam95r8edq2cfjflt4v7sm/16733808387.pdf
    • http://studiospazioambiente.it/userfiles/files/7154458278.pdf
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/cb8e57c2b40e82bf022073fe622d6ef6/nipazubonujizeboxumaje.pdf
    • https://sensormaticltd.com/app/templates/js/ckfinder/userfiles/files/53434051875.pdf
    • https://www.syah.org/wp-content/plugins/super-forms/uploads/php/files/d48fb8ae57afca2c3936077868567348/97555241827.pdf
    • http://brenna-ski.pl/userfiles/file/zidabajafijajurixutiw.pdf
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/08980f8832cca7fb1041bd43570ebced/91596203887.pdf
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f78823da6f---12566571742.pdf
    • https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/16145742254563---vuvanodukenebumafotaw.pdf
    • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/161365ffe69987---17229906192.pdf
    • https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d0d4a10026---75270059597.pdf
    • https://daulte.com/ckfinder/userfiles/files/29873939479.pdf
    • http://www.rajpuc.pl/pics/file/rupawadojozapevujus.pdf
    • http://osoboebludo.com/ckfinder/userfiles/files/pumomobezutoguwosemot.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=omah+lay+godly+mp3+download

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