PDF malware analysis — malicious · e4787f8a600a1b43

MALICIOUS

PDF

109.6 KB Created: 2021-02-28 05:50:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: 209d44067486d130dac416c713e91604 SHA-1: 3412c0bedcea47351e377117e6e0c7d02dc30fdc SHA-256: e4787f8a600a1b4397d9529690cc41d6a1b242d84a48b063670fdb1cb32ac2ad

242 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file contains a large number of external links, many hosted on disposable domains, indicating it functions as a link farm. One critical heuristic identified links to known malicious redirector infrastructure, suggesting a phishing or malware distribution intent. The ML classifier also flagged this PDF with high confidence.

Machine Learning

Nyx PDF Classifier malicious score 0.9451

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
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.
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://yafferge.ru/aws?utm_term=how+much+is+a+sub+zero+compressor In PDF document text
- https://bopilopuneliniw.weebly.com/uploads/1/3/5/3/135304065/lusurofiso.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4462075/normal_5fe5e72a4f048.pdfIn PDF document text
- http://pinopizo.sportsontheweb.net/46657527116.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4500692/normal_60221e8ca98cb.pdfIn PDF document text
- https://cdn.sqhk.co/wemopizajazo/jijf1ie/formula_1_live_tv_app.pdfIn PDF document text
- https://kaxogirigajel.weebly.com/uploads/1/3/4/6/134611066/b4666e7064876.pdfIn PDF document text
- https://cdn.sqhk.co/wazilisiko/ZMNiaib/lazexipo.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393349/normal_6012a0bea7aa4.pdfIn PDF document text
- https://kijujula.weebly.com/uploads/1/3/4/7/134756294/batawiwarilurop_zuvejudu.pdfIn PDF document text
- https://dapoxegimore.weebly.com/uploads/1/3/0/9/130969679/6592643.pdfIn PDF document text
- https://guparamoribum.weebly.com/uploads/1/3/2/7/132711937/4885921.pdfIn PDF document text
- https://cdn.sqhk.co/lenawemijixe/hugclii/5883865818.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365541/normal_603aa0d1f406d.pdfIn PDF document text
- https://pebabozepevi.weebly.com/uploads/1/3/5/9/135966679/3145497.pdfIn PDF document text

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