MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous external links, many pointing to disposable hosting, suggesting a link farm or SEO poisoning attack. The document body, though heavily obfuscated, contains text related to 'English essentials answer key' and 'wkhtmltopdf', likely a lure to encourage clicks on the embedded URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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=english+essentials+answer+key PDF link annotation
- https://cdn.sqhk.co/legexere/Aja9hgb/19974657001.pdfIn PDF document text
- https://cdn.sqhk.co/texaxonaguzo/hiiaidx/competition_music_mp4.pdfIn PDF document text
- https://zesaxigupube.weebly.com/uploads/1/3/4/0/134016892/6217734.pdfIn PDF document text
- https://cdn.sqhk.co/vutabopi/qjfwUhh/balotijidudidonarati.pdfIn PDF document text
- http://mibejar.sportsontheweb.net/bear_archery_cruzer_x_rth_compound_bow_package.pdfIn PDF document text
- http://famozosivupiwij.sportsontheweb.net/kibagetolimizuketa.pdfIn PDF document text
- https://cdn.sqhk.co/ludukuni/NMBjigi/5956799423.pdfIn PDF document text
- https://lurevovikofa.weebly.com/uploads/1/3/4/6/134693735/vaweneruvatewowat.pdfIn PDF document text
- https://febasenijig.weebly.com/uploads/1/3/1/3/131379808/8716904e82.pdfIn PDF document text
- https://cdn.sqhk.co/lusikagidet/ibEitja/zeus_tattoo_forearm.pdfIn PDF document text
- https://cdn.sqhk.co/vekuzajomugi/0hiZNgd/angie_s_list_portland.pdfIn PDF document text
- https://doriruvoni.weebly.com/uploads/1/3/4/5/134585963/4791b905509.pdfIn PDF document text
- https://cdn.sqhk.co/letojeka/iazJiim/download_free_offline_english_dictionary_for_android.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://f6e2a16f-d004-42cd-8f17-0463e090774c.filesusr.com/ugd/c70c35_6f25da0443b94114b0046085ef511068.pdf?index=trueIn PDF document text
- http://pizuzol.onlinewebshop.net/office_administrator_job_description_cv.pdfIn PDF document text
- http://gurabagoderes.atwebpages.com/72052026355.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7b4da23a-4655-4720-850e-6014556befbd/wubuxojoguwokuridigazilu.pdfIn PDF document text
- https://737bf953-b780-43bc-8af0-312ed5328a40.filesusr.com/ugd/017c44_abd46c8ab12149e985fc9814cd6ce57e.pdf?index=trueIn PDF document text
- https://d17f4099-ecc1-42b1-9c73-51521793457c.filesusr.com/ugd/4a2613_24866afd47e04345bc87cde3f5caa9ee.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ef87.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF87 | 5160 bytes |
SHA-256: 6e139445e89018582499bbdebb7bcdfb4039931f74624e5aadcf05a2875bb293 |
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font_01_sfnt_off0001012d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1012D | 12056 bytes |
SHA-256: 4f347d34c7e3d454bf19433a8703f74bcf07a9137203d7fb2022c4d10791fdb4 |
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font_02_sfnt_off00012842.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12842 | 16100 bytes |
SHA-256: 66085bd33cb55e0ce391350d0a43119f109c2555ce96eb5f7cd622e5178496ec |
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