MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of embedded links, many of which point to disposable hosting or redirect to known malicious infrastructure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' specifically flags a URL leading to 'yafferge.ru', indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 6
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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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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://yafferge.ru/123?utm_term=apartment+guide+naples+fl In PDF document text
- http://smotrikino.fun/lepamivenugikopzcx3.pdfIn PDF document text
- https://vodexekuteb.weebly.com/uploads/1/3/0/7/130776001/7076805.pdfIn PDF document text
- https://durezeneb.weebly.com/uploads/1/3/4/2/134235042/sofezow.pdfIn PDF document text
- https://logifuvixejexa.weebly.com/uploads/1/3/6/0/136019385/mulowij.pdfIn PDF document text
- https://rajezedej.weebly.com/uploads/1/3/2/6/132682549/14513d.pdfIn PDF document text
- http://jushq.club/405031217797gqlk.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/5f66bcd8-530f-4478-8686-14e0fe00002d/self_introduction_sample_essay.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ba6db5e6-ae8d-4aa3-b437-2d2b1709ee5a/vupomuxulomiranafagakin.pdfIn PDF document text
- https://s3.amazonaws.com/tuletivotarupu/sheet_street_gateway_trading_hours.pdfIn PDF document text
- https://1a441fb4-51dd-4528-a053-eb59ff664e18.filesusr.com/ugd/43d9d5_b4dbf601a708416d8b2229a50d016568.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/6f57dae8-09ff-4fa1-9a31-2513217643b6/irobot_roomba_620_service_manual.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c69626de-ca6a-4895-9b73-43df0a71e997/26965540576.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f2ad46a9-6e38-4b3d-a439-a62c53dbe073/in_the_morning_time_the_sun_will_shine.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/206dc23f-a77f-4ace-aba1-68bcc07e43bf/90993298493.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/45e25185-89d0-466c-ba25-0c9f29045a95/49496825399.pdfIn PDF document text
- https://6f8cb219-4830-455d-9ced-b55e65700e85.filesusr.com/ugd/fd30ac_1370ce32bb424814840e73b97c0a2e78.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/kasuwevovog/sabebuvemexariv.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/416fd56c-31c4-4ae7-84ad-8d22bee22f30/60793547323.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_off0000f993.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF993 | 5348 bytes |
SHA-256: 674bfca67617cc68b59ea06149ed3388052b54bd4e27c0e6d874c085a3f06cb2 |
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font_01_sfnt_off00010bae.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10BAE | 10836 bytes |
SHA-256: 9d4bcad5e786015d07ec140f589f2dd911aa6a74c22d8d6b389170f9050a4fd3 |
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