MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL pointing to 'jacksth.ru/award', suggesting a phishing attempt or a lure to a malicious site. The document body, though heavily obfuscated, contains keywords related to medical conditions, likely used as a pretext to disguise the malicious intent. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly indicate a phishing or malware distribution vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
Heuristics 5
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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 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=urticaria+angioedema+anafilaxia+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4379387/normal_6030a4042e5d1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371004/normal_602c9cf38bc29.pdfIn PDF document text
- http://pedaxofanor.mywebcommunity.org/topographic_map_reading.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4495050/normal_60037c04170c3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368474/normal_6042df202de96.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4420222/normal_60387e556cbfd.pdfIn PDF document text
- https://cdn.sqhk.co/noneniwetav/iihu8d9/33376567155.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4390069/normal_5fca0501ec8fe.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4489057/normal_605144c169f8f.pdfIn PDF document text
- https://cdn.sqhk.co/dupetodim/bkwIHyv/hepatitis_a_vaccine_side_effects.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4450415/normal_5fe32d14c273f.pdfIn PDF document text
- https://cdn.sqhk.co/tegatiwuwax/hatinhb/feworudexufi.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4417652/normal_6027476865cfc.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4477878/normal_601a16067ee42.pdfIn PDF document text
- http://fibiver.mygamesonline.org/67850370723.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383923/normal_6042c32ad630a.pdfIn PDF document text
- https://cdn.sqhk.co/pajokiman/ijoPKXA/sling_tv_channels_2020.pdfIn PDF document text
- http://wipunemobak.mygamesonline.org/agatha_christie_books_for_sale.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379959/normal_5fdb3c7b310cd.pdfIn PDF document text
- http://gowanenutik.mypressonline.com/piano_sheet_music_easy.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/60354646-8c57-425d-ad5a-d451318c53ea/geremab.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f2f10445-4cbf-4dd8-97e6-48f2de65b409/dell_latitude_e6410_driver_pack_windows_xp.pdfIn PDF document text
- http://tobidogajetu.onlinewebshop.net/interview_questions_for_english_teachers.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/554baa34-3eff-4777-b4ee-8975f23b0316/the_book_thief_download.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_off00013a29.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13A29 | 5356 bytes |
SHA-256: a021b209f4a8f30ff826c28faf28b434752cd70846dc8ec553017cf3f4891971 |
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font_01_sfnt_off00014c57.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14C57 | 12896 bytes |
SHA-256: b36fbbda9442089e1273ebc9021d06c2e02fbd8bbedcd198535d0a1732b7a773 |
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