MALICIOUS
226
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains numerous external links, many pointing to benign content, but one notable URL, 'https://jacksth.ru/award?keyword=active+directory+bangla+tutorial+pdf', is flagged as unknown. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely instructs users to open a password-protected archive, a common tactic to bypass gateway security. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 7
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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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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://jacksth.ru/award?keyword=active+directory+bangla+tutorial+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4370547/normal_5fda036f4bc14.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4464710/normal_603ddf03796e3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387701/normal_6014e642ccb1c.pdfIn PDF document text
- http://ratulave.22web.org/how_to_improve_conditioning_for_soccer.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4417669/normal_5fdbfbdec6463.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380522/normal_6019d28f8a426.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4386354/normal_60100124e544b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4472774/normal_6028801a6ff48.pdfIn PDF document text
- http://sdfsdfsdf.shaketorch.com/the_hacker_playbook_3.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/gewuwasi/neet_exam_2020_syllabus.pdfIn PDF document text
- https://e31b828f-dd5d-4b35-abba-5777d5fc2ed6.filesusr.com/ugd/56a8cc_7a78c448a75244dbaa03195d405dfbfa.pdf?index=trueIn PDF document text
- https://6632aaff-1fe9-4f1d-acb3-7d444e457837.filesusr.com/ugd/ce4b7c_288c2e960e8747fb98cf13a643835b4f.pdf?index=trueIn PDF document text
- https://4c72699b-aa2e-4dc8-8bd5-1a54e8f938a6.filesusr.com/ugd/f3cb45_7ebae03d8cac4f47b370e13c1da57d84.pdf?index=trueIn PDF document text
- https://d19688e0-347f-4d9d-8cb3-d47c6e049f3d.filesusr.com/ugd/c618e9_323e0d6a2d2742998ef65c2a7643226d.pdf?index=trueIn PDF document text
- http://ganusigesu.rf.gd/37866848599.pdfIn PDF document text
- https://c183b790-cb34-49aa-848e-1a9f2b14dda3.filesusr.com/ugd/d8966e_d4b8b52f9d4043218c222152dfcf22e1.pdf?index=trueIn PDF document text
- http://demevobofimozu.epizy.com/approximation_ibps_po.pdfIn PDF document text
- https://s3.amazonaws.com/minegikukovel/lesson_4._3_equivalent_ratios_answers.pdfIn PDF document text
- https://c4e42e93-254c-4ba8-b495-737f84002742.filesusr.com/ugd/ddb60a_5ad58b6ab08e45ea9a02ed20bf6e4325.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/zesotat/juzadunukafupefawaxow.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00013dcd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13DCD | 3072 bytes |
SHA-256: e89b3bccb58be0ff3ed8183cc9e5531102c97cbe8503103eed869d658939fcbd |
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font_01_sfnt_off000148c7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x148C7 | 5436 bytes |
SHA-256: 23664ef5f8733550bb7c632ecf7e8d4e6a3bce0f93bee0f8768ed461453ed365 |
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font_02_sfnt_off00015b69.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15B69 | 10600 bytes |
SHA-256: 01e7d0b6b24b4d1b3fdc836dd8a9fe3dac1e4c39838568e14c6b3325770e76e5 |
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