PDF malware analysis — malicious · c46185105402de2c

MALICIOUS

PDF

48.0 KB Created: 2021-09-03 13:43:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26

MD5: e32579fc5e9d2b674525eb39c9040288 SHA-1: 79a28c87ed834f57cc7eaad872d3d63f1c6d5a77 SHA-256: c46185105402de2cf2c51e8dce95b5800cdef7d0fa664bd6a796191933a579fb

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF contains numerous embedded URLs that point to external resources, many of which are hosted on compromised CMS platforms or disposable domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or distributing further malware. The presence of a link farm suggests an attempt to obscure the final destination and evade detection.

Machine Learning

Nyx PDF Classifier malicious score 0.7786

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://philabc.ru/uplcv?utm_term=convertir+de+jpg+a+pdf+gratis+online PDF link annotation
- https://binarbaidtrading.com/public_html/userfiles/file/88489206448.pdfIn PDF document text
- https://avenue102.com/uploads/file/bunamalekatujugulap.pdfIn PDF document text
- https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/4410b48eeb4d05437189622ae8045e7a/35198369281.pdfIn PDF document text
- http://jaluzipro.ru/public/userfiles/file/95732757219.pdfIn PDF document text
- https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4b5bebf731---94199293128.pdfIn PDF document text
- http://www.redactordecontenidos.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1609e9c18419ab---87495078679.pdfIn PDF document text
- http://thecreditcrisis.net/clients/73966/File/dolisekuxasepavugoxubagul.pdfIn PDF document text
- http://evaemlak.com/userfiles/file///43345252991.pdfIn PDF document text
- http://www.prieteniitehnicii.ro/documente/file/29839268216.pdfIn PDF document text
- http://quaretti.it/userfiles/files/88742694482.pdfIn PDF document text
- http://szkolka-wiercioch.pl/files/file/woxipuridap.pdfIn PDF document text
- https://koetec.com/home/~ptow/public_html/ckfinder/userfiles/files/75270735311.pdfIn PDF document text
- https://www.scilights.com/wp-content/plugins/super-forms/uploads/phIn PDF document text

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