MALICIOUS
146
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains malformed streams and multiple external URIs, indicating malicious intent. The ML classifier and ClamAV detection strongly suggest this is a phishing or trojan delivery mechanism. The document body is heavily obfuscated, but the presence of URLs like 'https://xezojetit.ru/strik?utm_term=helix+lt+review' points to a lure designed to redirect users to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9995
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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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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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://xezojetit.ru/strik?utm_term=helix+lt+review PDF link annotation
- http://buytoday.cc/criminal_procedure_outline_californiay2qck.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4459636/normal_5ff16133ec2d5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374986/normal_603a4b8f4848d.pdfIn PDF document text
- http://nonly.xyz/99378076303s7chf.pdfIn PDF document text
- http://uniques.space/58449148794fa7le.pdfIn PDF document text
- http://okstore.info/renanedomuvizoh8g4r.pdfIn PDF document text
- http://nature-ital.space/favinuwizobapin3ix8h.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383445/normal_601a1a401ba8e.pdfIn PDF document text
- http://robinmani.site/75533115439x1n21.pdfIn PDF document text
- http://topvideo.design/fubadirofitapxa.pdfIn PDF document text
- http://wonozudobitisog.scienceontheweb.net/26850391947.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4444884/normal_6042c16fcf4f4.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4369189/normal_5ff0cc15180d9.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://16e729f2-8c5c-4787-b670-14aeba6c5e03.filesusr.com/ugd/ac55e2_bfc6b0631f144eed8183e81a66443df1.pdf?index=trueIn PDF document text
- https://ea74ff18-003d-4094-8454-8d7e15e33abb.filesusr.com/ugd/50de67_6876e30417e64308ae317884e93779a9.pdf?index=trueIn PDF document text
- http://nuzikenevizut.onlinewebshop.net/40785962429.pdfIn PDF document text
- https://786c536d-253b-4a15-94df-129c4693a223.filesusr.com/ugd/1fc311_97af8df2e4d24538b9c671f1d6586417.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/xeruxaxer/global_perspectives_igcse_individual_report.pdfIn PDF document text
- https://d046670e-94b8-4ea2-8efc-69fca9b502c9.filesusr.com/ugd/c0b427_fffbbdabcb2c46a4810bdef6fc51169a.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/tomamujuf/vadawopubevuxorali.pdfIn PDF document text
- https://s3.amazonaws.com/sorapobuk/35188087154.pdfIn PDF document text
- https://44407f20-7244-4107-9544-84d8151b6f9a.filesusr.com/ugd/8508de_0704933fb29646418431caf133e114fe.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ee48.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE48 | 4044 bytes |
SHA-256: 2d2aaf6c218cab82b9cd8c65130e81ab0b76375d1845fcfefa83c41f01815c9d |
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font_01_sfnt_off0000fc07.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC07 | 10336 bytes |
SHA-256: 80d6ad0c48cd5c013610db4c6da97c288f824dea41baadd0cb02e6b467f15e55 |
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font_02_sfnt_off00011f8d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11F8D | 4324 bytes |
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34 |
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