PDF malware analysis — malicious · ddf80a27fc5c6080

MALICIOUS

PDF

57.0 KB Created: 2021-04-25 13:15:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13

MD5: ef72cce1488a696de29b2e576bbd4907 SHA-1: 21264f9fce1729065ee34310229e1ec7e36f9209 SHA-256: ddf80a27fc5c6080917e6fc4e6738e4b4c6e7541b492adf9edb149cf4db05be6

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to disposable hosting or link farms, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to a product advertisement, likely intended to trick the user into clicking a malicious link.

Machine Learning

Nyx PDF Classifier malicious score 0.9915

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://www.telluridescience.org/sites/default/files/tstc-applications/nuwirofu.pdf In PDF document text
- https://www.natsihwa.org.au/sites/default/files/webform/17423244846.pdfIn PDF document text
- https://www.uts.cw/sites/default/files/webform/tidenopuzi.pdfIn PDF document text
- https://www.ofalloncasting.com/sites/default/files/webform/34904816646.pdfIn PDF document text
- http://pilgrimland.com/sites/default/files/webform/resume-uploads/40494538869.pdfIn PDF document text
- http://www.friendlycc.com/sites/default/files/webform/topevonizudurazot.pdfIn PDF document text
- http://pilgrimland.com/sites/default/files/webform/resume-uploads/mikax.pdfIn PDF document text
- https://vectorcorp.net/sites/default/files/webform/resume/30106672217.pdfIn PDF document text
- http://russian-ice-spb.ru/sites/default/files/webform/files/fapulewamekunasu.pdfIn PDF document text
- https://extranet.blanchisserie-toulousaine-de-sante.com/sites/extranet.blanchisserie-toulousaine-de-sante.com/files/documents/justificatifs/goxara.pdfIn PDF document text
- https://ambrose.edu/sites/default/files/webform/7968200385.pdfIn PDF document text
- http://cicatsalud.com/html/sites/default/files/webform/39809543560.pdfIn PDF document text
- http://cicatsalud.com/html/sites/default/files/webform/32041770382.pdfIn PDF document text
- http://oaklandchildcare.org/sites/default/files/webform/veser.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=plantronics+voyager+edge+wireless+bluetooth+headset+with+charging+casePDF link annotation
- https://ubmemeaensoprod.s3.amazonaws.com/ifsec_international/call_for_papers/2021/03/kozavexol.pdfIn PDF document text
- https://thesanfordschool.asu.edu/sites/default/files/webform/fapivo.pdfIn PDF document text
- https://ubmemeaensoprod.s3.amazonaws.com/ifsec_international/call_for_papers/2021/03/37488496184.pdfIn PDF document text

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