MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was flagged as malicious by a ML classifier and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, with one pointing to 'trafficel.ru', suggesting a link farm or phishing lure. The PDF structure and embedded content are consistent with attempts to disguise malicious activity, potentially leading to further compromise.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
Heuristics 5
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall 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.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne 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://trafficel.ru/123?utm_term=the+ideal+team+player+book+club+questions PDF link annotation
- https://cdn-cms.f-static.net/uploads/4371025/normal_5f9f5b981f7ac.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369655/normal_5f89d070b29e8.pdfIn PDF document text
- https://kugodago.weebly.com/uploads/1/3/4/4/134491336/valewipe.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4403404/normal_5faa176749f5b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4486346/normal_5faf2805e8745.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/najubu/converter_em_dwg_autocad_2016.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/bc431837-2003-47e6-9d75-0d46cd6de09e/89491137943.pdfIn PDF document text
- https://s3.amazonaws.com/sefipa/67211084089.pdfIn PDF document text
- https://s3.amazonaws.com/rimejiguvif/phenol_formaldehyde_resin_melting_point.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c253.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC253 | 5692 bytes |
SHA-256: b5b68775f5e4eca3c8164d50c2d5ea4df22042653574b55b417969c522e66447 |
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font_01_sfnt_off0000d57f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD57F | 12720 bytes |
SHA-256: 37107e59dadff4ec046e84db7c63bdaadec48a87779c3ef0541f14b760a9d656 |
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