MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was identified as malicious by both ML classifiers and ClamAV, specifically flagged as phishing/trojan. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm or SEO spam operation. The document body, though heavily obfuscated, appears to be a lure related to 'Evolution study guide answer key biology', directing users to external URLs like zajinet.ru.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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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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://zajinet.ru/wix?keyword=evolution+study+guide+answer+key+biology PDF link annotation
- http://pe50off.info/vans_shoes_size_guide_cmbo9rp.pdfIn PDF document text
- https://cdn.sqhk.co/jiguluzufuwa/Xhcjdie/kewupekatogesatot.pdfIn PDF document text
- http://xerujupuje.sportsontheweb.net/45010774054.pdfIn PDF document text
- http://kuboduzuke.mypressonline.com/36151275498.pdfIn PDF document text
- http://santaparker.store/ikea_malm_headboard_storage_hack1pzi2.pdfIn PDF document text
- http://tagoturuluro.medianewsonline.com/duxorusetofidelore.pdfIn PDF document text
- http://gitikirazidapi.medianewsonline.com/27506607486.pdfIn PDF document text
- http://posiximuteg.sportsontheweb.net/project_budget_sample.pdfIn PDF document text
- http://fallofelin.online/bekhayali_female_ringtone_pagalworldcelmz.pdfIn PDF document text
- https://cdn.sqhk.co/zadirajuviku/7je79jb/7638390484.pdfIn PDF document text
- https://jezonekapinojel.weebly.com/uploads/1/3/4/6/134619201/wudoje-wiselotojefezi.pdfIn PDF document text
- https://senevabitup.weebly.com/uploads/1/3/4/2/134234896/ziwezatu.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/43b9b142-6fc8-4614-9418-c317e4b7f824/klein_organic_chemistry_3rd_edition.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f6f3f2bd-1b5c-44da-9091-d2175a7662ee/66431868095.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3a096f42-961e-4df6-8975-cb21f077bf30/legend_of_the_christmas_rose_pin.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/dc995f4d-e47f-4b78-b471-9b1b47fe8dfb/how_to_draw_female_action_poses.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5cb68f5b-68ad-4c1a-9298-9f9f5b0e3ddc/ropijolupafaro.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/590435e4-df1c-4e51-b564-b653b1e6d34a/39579031693.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/629a8ee2-c612-49ab-9834-6ca637b1729f/jizaxujujotutufeb.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8acebbd9-d934-49f3-98cd-b525c8520287/2014_yfz_450_service_manual.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
- 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_off0000cf76.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCF76 | 5408 bytes |
SHA-256: 5a5127581f40c263329e5079e88df3633cf083cc0e70c07253b4e2ab6b69a0b6 |
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font_01_sfnt_off0000e206.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE206 | 10372 bytes |
SHA-256: a18a4b058e546d791ac6c2df00e86388c8379408f4313d6a5cfdc92c2567bcf9 |
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font_02_sfnt_off00010582.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10582 | 16132 bytes |
SHA-256: 4f6d6443d667672870c38ce4e1d364e29e61a0df6fd2d8217a47270b9fff04c9 |
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