MALICIOUS
214
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a deceptive title suggesting a free download, but analysis reveals it links to a known malicious redirector. The presence of numerous external PDF links, many pointing to potentially malicious or SEO-farmed content, indicates a campaign to distribute malware or conduct phishing. The ML classifier and ClamAV detection strongly support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9994
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/strik?utm_term=quantitative+aptitude+tricks+pdf+download+free In PDF document text
- https://static.s123-cdn-static.com/uploads/4416929/normal_5fc7432e8975a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4447914/normal_6026d32984f87.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4393483/normal_5fff82fe85508.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4499958/normal_6038b489ecf37.pdfIn PDF document text
- https://litazivufili.weebly.com/uploads/1/3/4/3/134305244/zimofefimimeg.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4422909/normal_6031054bb34f4.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4427313/normal_5fe1cd33d4156.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4455374/normal_601b29f559731.pdfIn PDF document text
- https://serawododi.weebly.com/uploads/1/3/4/8/134885696/9159696.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413231/normal_60309b9abbf6c.pdfIn PDF document text
- https://zizusufake.weebly.com/uploads/1/3/4/6/134646877/384794fd42e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4469128/normal_6033e25ce09e1.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://s3.amazonaws.com/nijosinizo/viwugerotevesu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/083c5b5e-146e-46c7-bf77-0061395f6e91/pexilepukoxugumomemoxoz.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d462064c-fcae-4150-b414-9c41ac47a285/best_application_to_learn_english_language.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/38f2a3d9-7b1d-4a7b-a0e2-b00544749472/loxul.pdfIn PDF document text
- https://s3.amazonaws.com/dudigonifu/stepstick_a4988_datasheet.pdfIn PDF document text
- https://s3.amazonaws.com/podawakumepewez/cannibals_with_forks_free.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/81e370c6-2a6f-4bf3-b28a-c1e53ee78f28/kenwood_ts_440_manuale_italiano.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c8374b3b-a82a-4c32-a902-cd29ddf4dee7/39248514351.pdfIn PDF document text
- https://s3.amazonaws.com/suzujewa/arthur_rimbaud_poems.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f433.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF433 | 5308 bytes |
SHA-256: c42761046909b5a3cf9a2495d54099b4e313579b7fcdf6ec505874f72d1f80a6 |
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font_01_sfnt_off00010662.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10662 | 10552 bytes |
SHA-256: 5678e43f6c74c52f4fd72d298d81de322fb84587383f0c6ae500c35b1bb3146d |
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font_02_sfnt_off00012a7f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12A7F | 16204 bytes |
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501 |
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font_03_sfnt_off00013fad.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13FAD | 4324 bytes |
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361 |
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