MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a LOLBin command-execution lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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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LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMANDExtracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
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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://baarspo.ru/strik?utm_term=restful+web+services+for+dummies PDF link annotation
- http://lnstagramoriginal.com/ant_manager_serial_key3jgdf.pdfIn PDF document text
- http://show-visitor.xyz/mujavifuketafojfkyh.pdfIn PDF document text
- http://korecos.ru/how_to_connect_a_blackweb_wireless_mouse9rg36.pdfIn PDF document text
- http://dithetsen.xyz/administracion_de_medicamentos_por_via_subcutaneagrgw6.pdfIn PDF document text
- https://zutiwemozebej.weebly.com/uploads/1/3/2/7/132712207/5058779.pdfIn PDF document text
- http://citruss.space/acrylic_sheets_suppliers_in_kenyahjxze.pdfIn PDF document text
- http://natnat.fun/ranotafalusimuliduwivun1hxhc.pdfIn PDF document text
- https://gijidibeb.weebly.com/uploads/1/3/4/7/134702067/013977b38b7c80.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://8271b8e8-1520-4b18-8785-2fafc8cd33e6.filesusr.com/ugd/efc97f_7026d1ee69d64df5b7b5a4fb6ec32b8f.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/fopalew/motemepos.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/494b42df-e1c2-4d54-aa73-f75edff46d84/regular_and_irregular_verbs_in_english_language.pdfIn PDF document text
- https://3d73ec66-e24e-4607-99a5-aa3c333c10ea.filesusr.com/ugd/a96454_2b6110b761214320ae1d4e4784e63f8c.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/turip/28187975439.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/92f7c3ca-96bd-4775-b500-7938bc5027e6/13255981159.pdfIn PDF document text
- https://c6de0af5-2a4c-46da-924c-839bccb102c6.filesusr.com/ugd/5f1f0f_f8e6e8d0defa4eeda01ddbc70cacf19a.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/kezemiradigu/kerutoromir.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7b8fdd98-f8d4-44cf-b6fb-fb83de04c428/sherlock_holmes_hound_of_baskerville_chapter_summary.pdfIn PDF document text
- https://04a80c79-134c-446e-801b-0c1635678e59.filesusr.com/ugd/5cebf8_8abc4e15fff64506aa231b8478628d3f.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/jofunozuzof/20297324396.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_off0000e6b6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE6B6 | 5256 bytes |
SHA-256: b24f552e26bc5b27efba20796fafc205cf2356a70cef415866a5a11fc7641530 |
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font_01_sfnt_off0000f8a1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF8A1 | 10360 bytes |
SHA-256: 2747f319d90d7f83fdef9a0cdb697c200fdc36a069f32d45f9becef5fd5eb7cd |
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