Malicious PDF — malware analysis report

Static analysis result for SHA-256 66665179644f50ce…

MALICIOUS

PDF

38.9 KB Created: 2021-09-19 22:20:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: c0ea87b22ea263081b71ff8229f50c99 SHA-1: 73572f3c59e9a4c787a62129cd6a185a4161685e SHA-256: 66665179644f50ceb5cb54c7e5e60e570d3aa2bdf34c042083a386bd76c63df4
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF exhibits characteristics of a phishing lure, including an image-only presentation and multiple embedded links pointing to potentially compromised domains. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary attack pattern involves tricking users into clicking external links, which likely serve as a gateway to further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8495

Heuristics 6

  • 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 38 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.
  • 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://adice-area.com/pictures/files/dakimevatapexof.pdf In PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16138bf4334db4---doxupipesudupi.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16130448d6e24f---nikilovarigi.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/161446a60aa4cf---favisig.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/1613fe04fa80ba---74609947285.pdfIn PDF document text
    • https://dancleland.com/img/upload/file/40732777180.pdfIn PDF document text
    • http://hig-hegmann.de/userfiles/file/budazo.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/kumutatoxusukoxakujawuto.pdfIn PDF document text
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1612f1e5246b10---turajobiviwiv.pdfIn PDF document text
    • http://erulingua.hu/uploads/content_files/files/13816180475.pdfIn PDF document text
    • http://ylgems.com/file_media/file_image/file/13124678810.pdfIn PDF document text
    • http://kimandyoo.com/userfiles/file/82970347230.pdfIn PDF document text
    • https://webvitamin.vn/app/webroot/uploads/files/kapifu.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16143dc136bcaf---87585161977.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=srimad+bhagavad+gita+in+bengali+pdf+freePDF link annotation

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