MALICIOUS
214
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'crophysi.ru'. This, combined with a high ML score and ClamAV detection as 'Pdf.Phishing.Trojan', strongly indicates a phishing or malware distribution attempt. The document body, though heavily obfuscated, appears to be a lure related to exam preparation, aiming to trick users into clicking the malicious link.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
Heuristics 5
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF 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.
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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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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://crophysi.ru/award?keyword=rita+mulcahy+pmp+exam+prep+9th+edition+review In PDF document text
- https://cdn-cms.f-static.net/uploads/4497658/normal_602b232acb202.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4403960/normal_5fe8140f8e91c.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4471971/normal_600367cabda8c.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4376856/normal_6003652ddb22d.pdfIn PDF document text
- https://mokugutareno.weebly.com/uploads/1/3/1/6/131606089/8036346.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/xalasawu/imo_auto_call_recorder_app.pdfIn PDF document text
- https://s3.amazonaws.com/sukedil/vulegavunuj.pdfIn PDF document text
- http://taxifegizuni.epizy.com/55430048789.pdfIn PDF document text
- https://s3.amazonaws.com/tapelu/wavepad_audio_editor_pro_free.pdfIn PDF document text
- https://s3.amazonaws.com/gofiguj/zugemozunawovilobuvoxe.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/pdfIn 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_off0001000f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1000F | 5620 bytes |
SHA-256: fc5acf17a472d09a7560a9f164180a9899e0fdc717ede124ae193af491e29fd4 |
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font_01_sfnt_off00011325.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11325 | 10716 bytes |
SHA-256: f8f7ae4e4986983933aeeb85eb90f90d7044326acb98455f0fa503a942d26096 |
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