PDF malware analysis — malicious · 0ef2d1adf0142483

MALICIOUS

PDF

37.6 KB Created: 2020-12-19 22:35:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 253173634080ff116258d0c4e394b651 SHA-1: f5bfce15f64ab6ec8cfe1974ab714fb6033e083f SHA-256: 0ef2d1adf0142483ca215126ce7ffb08052ed8e2f755430f4787975b1303a4cc

262 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document is designed as a phishing lure, presenting itself as an image to obscure clickable links. It contains a high density of external links, many pointing to disposable hosting, and one critical link to a known malicious redirector infrastructure at 'traffmen.ru'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for credential harvesting or further malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9289

Heuristics 6

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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 37 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.
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://traffmen.ru/aws?utm_term=que+son+enlaces+quimicos+pdf
- https://static.s123-cdn-static.com/uploads/4427085/normal_5fdcb8e7015ef.pdf
- https://fekudumubaf.weebly.com/uploads/1/3/2/6/132681201/2bba1d0.pdf
- https://mumixopid.weebly.com/uploads/1/3/1/8/131872042/lexiju.pdf
- https://sezariserafuf.weebly.com/uploads/1/3/4/6/134673330/wenav.pdf
- https://vaxinukosiju.weebly.com/uploads/1/3/4/6/134625250/nawifi.pdf
- https://kawepuwaseleza.weebly.com/uploads/1/3/4/8/134849925/nofebaju.pdf
- https://cdn-cms.f-static.net/uploads/4460981/normal_5fb66f35b8ee8.pdf
- https://s3.amazonaws.com/kitakilesa/71294177155.pdf
- https://s3.amazonaws.com/luropi/13303612926.pdf

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