PDF malware analysis — malicious · 37f245cce8d16e16

MALICIOUS

PDF

50.6 KB Created: 2020-12-23 02:14:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05

MD5: 2ba661f40946233c59e53435f57198a1 SHA-1: 208856fc51e5de98237cbcab83ec2917e160b1b0 SHA-256: 37f245cce8d16e160e7110160fe0530138f1704145d2030fdc76a43968288a8a

252 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous links to redirector infrastructure, specifically identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting an attempt to manipulate search engine results for phishing or malware distribution. The ML classifier also flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.7323

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.
Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK

PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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://cctraff.ru/aws?utm_term=software+release+notes+template+microsoft+word In PDF document text
- https://cdn-cms.f-static.net/uploads/4417809/normal_5f95ed6c9fea0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4415739/normal_5fa8b02ac5984.pdfIn PDF document text
- https://suvuzijovibalis.weebly.com/uploads/1/3/4/6/134660606/zivenukozop-ruzonosa.pdfIn PDF document text
- https://zimipiboneletun.weebly.com/uploads/1/3/4/8/134894964/8ad709.pdfIn PDF document text
- https://danisamotaroz.weebly.com/uploads/1/3/1/6/131606121/peropazureluzopaboze.pdfIn PDF document text
- https://zuxosudeti.weebly.com/uploads/1/3/4/3/134359900/2c008.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4411511/normal_5f974ed4cf9f7.pdfIn PDF document text
- https://s3.amazonaws.com/fejififimaketo/kulobisida.pdfIn PDF document text
- https://s3.amazonaws.com/kozewuposoridil/8684693598.pdfIn PDF document text
- https://s3.amazonaws.com/warapagefasovi/pumukedozolov.pdfIn PDF document text
- https://s3.amazonaws.com/pevuwarobuvowa/texokelesoge.pdfIn PDF document text
- https://s3.amazonaws.com/piwanisaj/63529682733.pdfIn PDF document text

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PDF

Malware Insights

Machine Learning

Heuristics 5

Related samples 8