MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://crophysi.ru/strik'. This URL is presented in the context of a 'learning english speaking course free download pdf' lure. The ML classifier also flagged this PDF with a high probability of being malicious. No scripts were extracted, but the primary attack vector appears to be a phishing attempt via a malicious link embedded within the document.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 4
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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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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/strik?utm_term=learning+english+speaking+course+free+download+pdf In PDF document text
- https://cdn-cms.f-static.net/uploads/4374685/normal_602519693952f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4480743/normal_5fe7af968fc21.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4380393/normal_5fcd8110d73ca.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4480408/normal_6022bf7c26244.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4415524/normal_60071c16791bd.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4403117/normal_5feec9ee994d8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370744/normal_5fd1c86372c53.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4446924/normal_5fdbfd2ec32c6.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://vegodaravowes.rf.gd/58269923385.pdfIn PDF document text
- http://ruvedinaz.rf.gd/bhagat_singh_biography_in_english.pdfIn PDF document text
- http://wokoxut.epizy.com/89531905048.pdfIn PDF document text
- http://runoxujozu.rf.gd/26485491712.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_off0000d583.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD583 | 5516 bytes |
SHA-256: f75482a74437a8ac2fffdcee80aace071548bd914d314542ef6498f23716f2f2 |
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font_01_sfnt_off0000e857.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE857 | 10844 bytes |
SHA-256: 7e0dd228677c35e8f4e611c1c97e295e8bb76867052197ad1717d61a4705147a |
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