MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, containing numerous external links, with one prominent URL being https://leonvi.ru/wix?keyword=healthrider+h30x+manual. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall structure suggests it's part of a larger malicious operation, possibly for SEO spam or distributing further malware.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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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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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External URI info PDF_URIPDF contains an external URL action
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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://leonvi.ru/wix?keyword=healthrider+h30x+manual PDF link annotation
- https://cdn-cms.f-static.net/uploads/4444852/normal_600ae573ec8fc.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4391008/normal_601b858a87439.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4401703/normal_600cc1fb9b3fa.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4500183/normal_5ff02be98b6ef.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4447271/normal_60255af5e16b4.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4461511/normal_6000cf8d62355.pdfIn PDF document text
- http://nakapugevonisu.iblogger.org/what_does_the_ending_of_akira_mean.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4369522/normal_5feb7857cd255.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4460055/normal_5fdf9db8b37fc.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://12c48f50-3553-44c7-a31c-19fc5df83d07.filesusr.com/ugd/7e0eb0_a1b10bcf7d784095957c9b210e81e746.pdf?index=trueIn PDF document text
- https://0f285ee0-1b14-49a2-8a3e-060a2db94812.filesusr.com/ugd/4bf67f_d11444918c3143abb8ea95491e5ceaee.pdf?index=trueIn PDF document text
- https://ac65beef-1c88-4b01-a948-251493ed82f2.filesusr.com/ugd/09857b_078773b87462421baf74d9b958d5f78c.pdf?index=trueIn PDF document text
- https://064d663d-f6b2-44cf-a6ad-083da5f315e5.filesusr.com/ugd/77eba6_d17ea23a042d48598c3fdb6a742d5b20.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/wozoxub/sibofugogerezerugarawiw.pdfIn PDF document text
- https://40e214c1-1950-44e8-a195-e2c6eeb23253.filesusr.com/ugd/a517f4_4f322c4cdc83447784a6ba18a913002e.pdf?index=trueIn PDF document text
- https://7fca5364-97a1-4441-b76e-d2c429a59218.filesusr.com/ugd/735424_f07a59c69fed40fea59905cc97b1c13e.pdf?index=trueIn PDF document text
- https://ce322291-b3da-4cc2-ae0f-523e25daec44.filesusr.com/ugd/4530da_c21c762f9bcf452bbbe0eb47f42fb94f.pdf?index=trueIn PDF document text
- http://xukonepuwe.rf.gd/49521633211.pdfIn PDF document text
- https://29ca30ec-7ad4-487f-8637-d2d67f3a323c.filesusr.com/ugd/10b11f_2f5356088ca447bd8c074ca197b83691.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/tetofamuxulil/azur_lane_sakura_fleet_guide.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_off000102e1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x102E1 | 5220 bytes |
SHA-256: cdc50f7160a6fb7d4e5297b3d5b1d856f27549a8098138836f5532056a51337e |
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font_01_sfnt_off00011476.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11476 | 11380 bytes |
SHA-256: fe45724a80ae6902d77b48beb82657e311fb056cdeb2264a152c9733794abb72 |
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