PDF malware analysis — malicious · b469f339ff431220

MALICIOUS

PDF

66.5 KB Created: 2021-03-29 04:54:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 0c3db5ca6f9cab2c223c7b7b1215e36d SHA-1: 0a16eea2599590ca0a5732e55c9b50245e407054 SHA-256: b469f339ff431220ea9e93e5fcb58b72fed596efe5fc7822805b3d8c1cc75cf5

144 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its image-only nature and embedded clickable link. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary URL, https://crophysi.ru/strik?utm_term=examkrackers+9th+edition+download+free, is likely used to redirect the user to a malicious site or download a payload.

Machine Learning

Nyx PDF Classifier malicious score 0.5247

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
Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE

PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 66 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
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://crophysi.ru/strik?utm_term=examkrackers+9th+edition+download+free
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