MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains heuristics indicating it is a malicious redirector, specifically designed for phishing. The embedded URL, 'https://crophysi.ru/strik?utm_term=practical+machine+learning+tutorial+with+python', is identified as a known malicious redirector. The ML classifier also strongly flagged this PDF as malicious, aligning with the ClamAV detection of 'Pdf.Phishing.Trojan'. The document body, though heavily obfuscated, appears to be a lure for a machine learning tutorial.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF 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.
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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=practical+machine+learning+tutorial+with+python In PDF document text
- https://cdn-cms.f-static.net/uploads/4420903/normal_6048cf33d2d3d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4419832/normal_60196b0e6d906.pdfIn PDF document text
- https://cdn.sqhk.co/batumozi/AghVfhg/jowawudi.pdfIn PDF document text
- https://cdn.sqhk.co/jigugabopu/9cKibgc/wemel.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4417406/normal_602e2a6763b79.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393751/normal_602f2acf5d486.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4472788/normal_602d5b561fed9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373527/normal_5fd9ac00b0b5c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368479/normal_6023e0420fb8c.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4453337/normal_60079f731ac60.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/pokorevalaxex/xejufe.pdfIn PDF document text
- https://s3.amazonaws.com/donarepemi/naming_compounds_worksheet_answer_key.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/11f4c2bc-cfd0-47e9-9f7c-becdc46f79f4/resistance_band_leg_and_glute_exercises.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3da9ca79-0449-4e81-a7f0-084f9ab22af0/29_cfr_1926_osha_construction_industry_regulations__standards_july_2020_edition.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/77afd0ce-93c5-4202-a04f-bbf5d3fb2edb/princeton_offense_youth_basketball.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1070293e-127c-48a0-bc3e-469c52c91837/jugudujinamaxugonaki.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/68acf804-33ef-4916-850b-6712eba42ce1/94139487761.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9923a201-f5e0-411f-b9b0-0ecc6e28f954/pamuparomapasinufitupagaj.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/09c1a5d3-ecbc-41b9-9a08-83ea31451629/bissell_spotclean_pro_portable_carpet_cleaner.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/afc1cfaa-5c47-4894-b11a-424821e85a0b/ccna_security_210-260_exam_objectives.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_off0000f082.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF082 | 5364 bytes |
SHA-256: 9c74faf4feb11a274b674adccc6b650fe57ef2777dcdd1510ac2bf83fcb47af0 |
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font_01_sfnt_off000102ad.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x102AD | 10960 bytes |
SHA-256: a266ae71565a5923c5f7fc11316ae93568758e1f14f1c783259f1fe7df66c9a4 |
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