MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file has been identified as malicious by multiple heuristics and an ML classifier, indicating a high likelihood of malicious intent. The presence of a large number of external links, many pointing to disposable hosting, strongly suggests a link farm or SEO spam campaign. One critical heuristic identified a link to known malicious redirector infrastructure, further supporting the malicious nature of the document. The primary goal appears to be redirecting users to potentially harmful websites.
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://crophysi.ru/award?keyword=online+display+advertising+targeting+and+obtrusiveness+pdf In PDF document text
- http://moitender.org/sokejabanneoi3.pdfIn PDF document text
- https://cdn.sqhk.co/gibuzini/4jihwLo/lajokepadezugedari.pdfIn PDF document text
- https://cdn.sqhk.co/fetumamuv/lG3heid/81485569400.pdfIn PDF document text
- http://evilcheats.fun/how_to_make_starbucks_frappuccino_base9lfkp.pdfIn PDF document text
- https://cdn.sqhk.co/bomumuxa/SgcKieU/wowesimutejepivapumu.pdfIn PDF document text
- http://sevowina.medianewsonline.com/66321941327.pdfIn PDF document text
- http://b4shop.icu/lowrance_hds_5_fishfinder_gps_chartplotterayf97.pdfIn PDF document text
- https://cdn.sqhk.co/reriwoduriju/Eicjfgd/jetblue_ground_operations_crew_salary.pdfIn PDF document text
- https://cdn.sqhk.co/rubalibuzodi/gcjaKhd/rebozukame.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/ea53ea61-475b-43ad-955e-49b5b17278fe/gelapideneme.pdfIn PDF document text
- http://nukivamo.myartsonline.com/robunemor.pdfIn PDF document text
- https://5efcf519-4c71-4be9-a00f-e1d47ba804c5.filesusr.com/ugd/ebcc4b_b0dd7a0ea395429da7a34936138a9ba1.pdf?index=trueIn PDF document text
- https://920f4c01-5fd6-4c40-8b27-b99972fecb60.filesusr.com/ugd/d63aaf_3823ef4baba74193942751f13423707c.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/1cab94be-37a7-4240-b2f1-b7b8a6a93a5e/what_happens_when_a_helicopter_tail_rotor_fails.pdfIn PDF document text
- https://441768bb-9839-4df4-8f78-dd1233b527f6.filesusr.com/ugd/7e6080_4336688a43be45b0afbcbe4cee6fc348.pdf?index=trueIn PDF document text
- https://9a60fab3-6fb0-4be7-9305-b2e3cc44d963.filesusr.com/ugd/811c4f_09f66a37577d46e9bf4a1656923a9b4b.pdf?index=trueIn PDF document text
- https://86f5e18a-8766-4ae7-b9bf-31430b627380.filesusr.com/ugd/911c12_546e9b5d92984470bd8b31ef3426be33.pdf?index=trueIn PDF document text
- https://8c56b32b-3398-45d6-9c0b-b55146621f16.filesusr.com/ugd/6924eb_b3a88cf10eb8421b922789504ccb7855.pdf?index=trueIn PDF document text
- https://6e3eaeb2-b9dd-4462-8b56-96c59beebd9a.filesusr.com/ugd/dcc11b_ecd326ce13ec4db3945f9bed5cbdf7bb.pdf?index=trueIn 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_off0000fdc9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDC9 | 5536 bytes |
SHA-256: c8cb0f43c1384bd3fb588b1ee81d5bac4eb87691fc0dc941c41868bc244f0499 |
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font_01_sfnt_off000110b5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x110B5 | 10440 bytes |
SHA-256: 19ba61097bd8dafe2f791467b4d1af05a9af4405f0dbfddf7007a340e840ead1 |
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