PDF malware analysis — malicious · ad738f10332dd853

MALICIOUS

PDF

41.5 KB Created: 2021-04-17 05:37:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21

MD5: b4d0a5f0a89716921a4670a618a1cb57 SHA-1: b4d09ddfdb5cd42a17546aaa18e2f453437cc799 SHA-256: ad738f10332dd8534061b55684e440bf7d9a24c4b73deb96a15fb9826a36eb79

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The sample was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, with one heuristic specifically flagging it as a link farm on disposable hosting. This suggests the document's primary purpose is to redirect users to potentially harmful websites, likely for phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.7855

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 http://www.muttypawsacademy.com/sites/default/files/webform/vaccines/lozege.pdf In PDF document text
- http://www.friendlycc.com/sites/default/files/webform/mitiporaju.pdfIn PDF document text
- https://www.mothercare.ro/sites/default/files/webform/resumes/tawapiseligimagawawujimo.pdfIn PDF document text
- https://grossenbacher.co.nz/en/system/files/avoidance-training-certificates/tonitunivopevefasoxezaw.pdfIn PDF document text
- https://extranet.blanchisserie-toulousaine-de-sante.com/sites/extranet.blanchisserie-toulousaine-de-sante.com/files/documents/justificatifs/bariwogutal.pdfIn PDF document text
- https://www.uts.cw/sites/default/files/webform/58994315224.pdfIn PDF document text
- https://www.osgeurope.com/sites/osg-corporate.dev/files/webform/28911573484.pdfIn PDF document text
- https://www.uts.cw/sites/default/files/webform/89737617204.pdfIn PDF document text
- https://www.blplegal.com/sites/default/files/webform/25596831819.pdfIn PDF document text
- https://www.uts.cw/sites/default/files/webform/nukuromenalifaru.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=navien+nr+240a+flame+rod+assemblyPDF link annotation
- https://lib.asu.edu/system/files/webform/46247033309.pdfIn PDF document text
- https://ubmemeaensoprod.s3.amazonaws.com/ifsec_international/call_for_papers/2021/03/33404153997.pdfIn PDF document text

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