MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a large number of embedded links pointing to external PDF files, many hosted on disposable domains, indicating a link farm or SEO manipulation tactic. Critical heuristics flagged the PDF as a malicious redirector and a link farm, and ClamAV detected it as a phishing trojan. The ML classifier also strongly indicated maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 6
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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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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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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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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/123?utm_term=simple+math+facts+games In PDF document text
- https://cdn-cms.f-static.net/uploads/4474218/normal_5fe817cf0225e.pdfIn PDF document text
- http://jususozosowi.22web.org/abc_song_video.pdfIn PDF document text
- https://wilulesutazi.weebly.com/uploads/1/3/3/9/133997377/537286.pdfIn PDF document text
- https://vapevaka.weebly.com/uploads/1/3/1/4/131407737/52cbf53.pdfIn PDF document text
- https://marejipafikelor.weebly.com/uploads/1/3/1/4/131437604/joxowiwu.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4415546/normal_60108149a9f11.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4419451/normal_5fe0aac73cf7f.pdfIn PDF document text
- http://puzofogerexiwi.22web.org/worksheet_in_periodic_table_of_elements.pdfIn PDF document text
- https://gavuzolarot.weebly.com/uploads/1/3/4/4/134458525/gigovugi.pdfIn PDF document text
- https://wajuzetixageg.weebly.com/uploads/1/3/0/9/130969085/fijivowiwuweb_bisejogejuz_besubagoz.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4490739/normal_602df80150eb2.pdfIn PDF document text
- https://napifilimikap.weebly.com/uploads/1/3/1/6/131606974/3422501.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4453732/normal_602d53419d863.pdfIn PDF document text
- https://sidilatadafexu.weebly.com/uploads/1/3/1/1/131164021/rupepevadelex.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://tuzuvas.rf.gd/6033412940.pdfIn PDF document text
- http://posugez.epizy.com/turizujipazopirokasogu.pdfIn PDF document text
- http://fabupumow.epizy.com/suripumomijo.pdfIn PDF document text
- http://numebazo.rf.gd/rejixunarurezeduwupuma.pdfIn PDF document text
- http://tididesonorevo.rf.gd/majuvuvuwe.pdfIn PDF document text
- http://xaralitotido.rf.gd/guidelines_epo_ranges.pdfIn PDF document text
- http://pexedidal.rf.gd/24173230193.pdfIn PDF document text
- http://texazufuvo.rf.gd/lagu_maher_zain_vocals_only.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_off0000c6aa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC6AA | 5436 bytes |
SHA-256: eecd978f261829787a983f2092b416df88c48b456bea9fcbff159b8fc1b04e22 |
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font_01_sfnt_off0000d907.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD907 | 10816 bytes |
SHA-256: 640263dbe9a989285ab09e2a2bed39082481c37486bdf228c78346f5ed0ede4c |
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