MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, with one prominent link pointing to 'jottigo.ru', suggesting a link farm or redirection mechanism. The document body, though heavily obfuscated, contains references to 'Edexcel gcse 9- 1 biology textbook answers' and authoring information from 'wkhtmltopdf', indicating a potential lure to disguise malicious intent. The presence of numerous external links, including a PDF link farm heuristic, strongly suggests the document's primary purpose is to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
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 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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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://jottigo.ru/123?utm_term=edexcel+gcse+9-+1+biology+textbook+answers PDF link annotation
- https://zuseluxutiv.weebly.com/uploads/1/3/4/6/134686448/xeposo-giworo-peropereredil.pdfIn PDF document text
- https://rupusuji.weebly.com/uploads/1/3/4/8/134878943/xijugogufin_voluve_nakojasewesaref_vezigazapularo.pdfIn PDF document text
- https://gakewejodum.weebly.com/uploads/1/3/4/9/134902465/zuxenawopafek.pdfIn PDF document text
- https://gorixekaliwe.weebly.com/uploads/1/3/4/4/134439057/lokokod_totetuxolu.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/dosipive/96734320616.pdfIn PDF document text
- https://s3.amazonaws.com/jepinebawo/cover_letter_heading_template.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f9de4b44-22c6-43d2-9686-b91b11374e8c/vetofomizefivafowupuki.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/74eeb7c1-221d-48dc-b9d3-cddb98b62849/spalding_52_hercules_basketball_system_manual.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ccbf4fa0-11f7-4166-84ca-d27ae8fe69dd/seems_to_be_fine_synonym.pdfIn PDF document text
- https://s3.amazonaws.com/fadupazageraf/how_do_you_crochet_a_granny_square_blanket_in_one_color.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e6c50a96-06b4-434a-afaf-9829265f5a5a/44976365332.pdfIn PDF document text
- https://s3.amazonaws.com/dexodekelaseki/able2extract_professional_v5._0_free.pdfIn PDF document text
- https://s3.amazonaws.com/wolina/transformice_baffler_standalone.pdfIn PDF document text
- https://s3.amazonaws.com/vasofirida/freebsd_handbook.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fe9f0a53-ecf3-428d-84ba-ad90c3e8d784/how_to_get_ripped_with_trx.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/46c5ba5e-32a9-4676-a484-990028ddbc05/butudozexekokerov.pdfIn PDF document text
- https://s3.amazonaws.com/fidefofudi/java_version_1._7_0_06.pdfIn PDF document text
- https://s3.amazonaws.com/fizup/40336146240.pdfIn PDF document text
- https://s3.amazonaws.com/tozaduliwubega/71141654977.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cc60cda4-461b-4695-8f11-5796b81790f0/how_long_to_clear_skin_through_diet.pdfIn PDF document text
- https://s3.amazonaws.com/jinabom/gotaripabufadixadaw.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8f99cfac-b4d1-49f2-acb3-9aa3ca871c5d/nufuniw.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_off00018b43.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x18B43 | 5768 bytes |
SHA-256: 075ce840ff083e7561e241f3892a4a6e0221564fb05023d9b1c921cbefe29068 |
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font_01_sfnt_off00019f21.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x19F21 | 11212 bytes |
SHA-256: 5656fffdc485483043ad88296388aa38c07a3262da9c1897cd3cacc943e8e7d4 |
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