PDF malware analysis — malicious · 48413c4aa5579a49

MALICIOUS

PDF

68.7 KB Created: 2021-03-25 12:12:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: cd2946e55c1d109bedb29a5357c10316 SHA-1: 2bf54cf10cdbebab9c5f362cdd03b942d28a0f99 SHA-256: 48413c4aa5579a49954009dd0b1d2323baba495f9e09cf1d736a87b46eb0a16f

174 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 heuristic PDF_IMAGE_LURE indicates a common tactic where a screenshot is used to disguise a malicious link. The primary malicious URL identified is https://xajibur.ru/aws?utm_term=pascal%2527s+triangle+formula, which is likely used to redirect the user to a phishing site or download further malware. No scripts were extracted, but the PDF structure itself suggests a malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.5247

Heuristics 5

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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 68 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
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://xajibur.ru/aws?utm_term=pascal%2527s+triangle+formula
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