Malicious PDF — malware analysis report

Static analysis result for SHA-256 afd4604657aa1793…

MALICIOUS

PDF

48.0 KB Created: 2021-09-08 05:00:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: ad034441ed444e0b771f9a72e106d720 SHA-1: fece5e7df31a6d7cb611c0947d397e7f94bcb5d1 SHA-256: afd4604657aa17935879df902c528cad051952ef16412d074d19ba1764dd2000
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to multiple domains, many of which are hosted on compromised CMS uploads or disposable hosting, suggesting an attempt to obscure the true destination. While no scripts were explicitly extracted, the PDF structure and embedded URIs indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7892

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://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2d290572e8---nizelugabuwisezad.pdf In PDF document text
    • http://af.ssla.ru/images/fornews/files/deguvunajedi.pdfIn PDF document text
    • http://hanyuchina.com/upload/files/vesumalarazepefonu.pdfIn PDF document text
    • http://rybarict.cz/webpagebuilder/ckfinder/userfiles/files/xovibexa.pdfIn PDF document text
    • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160a3a3a232113---88057392366.pdfIn PDF document text
    • https://greyquotient.com/wp-content/plugins/super-forms/uploads/php/files/362bcf502ba7636b8e7735e21956e127/97392288030.pdfIn PDF document text
    • https://pima-alarms.eu/slicice/file/kovabegabajalunorokik.pdfIn PDF document text
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/04238975675fbad80d1edf545665e6eb/89851929807.pdfIn PDF document text
    • https://west-holding.com/userfiles/file/wufev.pdfIn PDF document text
    • http://elma1.ru/!upload/files/zekomimafikope.pdfIn PDF document text
    • http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/ruaig1jfkiho28p17klte99pk5/zidonov.pdfIn PDF document text
    • https://advance-pack.com/editor_upload/file/17588758170.pdfIn PDF document text
    • http://toflight.mobi/attachment/ckeditor/files/15d31b26857aa1115901ba8fb73a1009.pdfIn PDF document text
    • http://hoteldarim.ir/basefile/hoteldarimir/files/41011221514.pdfIn PDF document text
    • https://yantrasearch.com/ckfinder/userfiles/files/84894809778.pdfIn PDF document text
    • http://simkoongschool.com/uploads/editer/files/fulololomubufujiluxu.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/bffpndk1m5vpf83lbg48qo7s47/94530525446.pdfIn PDF document text
    • https://cvsc.co/userfiles/file/24938972200.pdfIn PDF document text
    • https://inverpalmas.com/aym_image/files/vewinuzev.pdfIn PDF document text
    • https://www.azembay.com/wp-content/plugins/super-forms/uploads/php/files/eiq5757vdf92a6mpfjhjso7phf/16964607466.pdfIn PDF document text
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/fdca94710a2c9162238bd16b87b6609d/95944056160.pdfIn PDF document text
    • http://halaljones.com/uploads/files/84541658661.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=itext+pdf+page+event+examplePDF link annotation

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