PDF malware analysis — malicious · f9a03827d80ecec7

MALICIOUS

PDF

48.0 KB Created: 2021-09-17 22:11:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23

MD5: c12fd1a2fcf6d246265edc0b64f451d7 SHA-1: 1cc49c65611251693fa295c226819499fbda2797 SHA-256: f9a03827d80ecec79a04b38f7cbcf7bead66afb431efb27a6ba6d9a7412f3725

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm directing to multiple unknown domains, with one URL pointing to a compromised WordPress upload. Heuristics indicate it's a link farm on disposable hosting and ClamAV detected it as a phishing trojan. The ML classifier also flagged it as malicious, suggesting a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.6791

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/161449160f3b09---99557136650.pdf In PDF document text
- https://takipcisec.com/calisma2/files/uploads/rosoribovopaxidomeveve.pdfIn PDF document text
- https://spyboarcams.com/files/piradifa.pdfIn PDF document text
- https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614491f7be241---mifojitujumufevedaworid.pdfIn PDF document text
- https://siangyun.com/upfiles/editor/files/sanutazogut.pdfIn PDF document text
- http://studiorestagno.eu/userfiles/files/56606818890.pdfIn PDF document text
- http://euro-ex.net/images/blog/file/71290268080.pdfIn PDF document text
- http://bright-mineral.com/uploadfile/file/2021090816235166.pdfIn PDF document text
- https://pachetedeturism.ro/images/files/73534707254.pdfIn PDF document text
- http://plan.msu.ac.th/ckfinder/userfiles/files/77851669087.pdfIn PDF document text
- http://jfhconsultancy.nl/userfiles/files/kejapivatixunazavevowovas.pdfIn PDF document text
- http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133f11ee006c---lilabapijibowotovixipipo.pdfIn PDF document text
- https://pirkitpadangas.lt/ckfinder/userfiles/files/dofopusesozikokelumob.pdfIn PDF document text
- http://rustproofingottawa.com/userfiles/file/53861161219.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=vegas+crime+simulator+hackPDF link annotation

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