MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. The document body, though heavily obfuscated, appears to be related to a 'Class 12 rbse biology practical book pdf', which is likely a lure to disguise the malicious nature of the embedded links. No scripts were extracted, but the PDF structure itself facilitates the hosting of numerous external URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
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://baarspo.ru/award?keyword=class+12+rbse+biology+practical+book+pdf PDF link annotation
- https://cdn.sqhk.co/merabuvi/Thbgfgc/15244574036.pdfIn PDF document text
- http://allostar.buzz/lilalaninitufakimilaridir6fis5.pdfIn PDF document text
- https://cdn.sqhk.co/potiribuwuf/ieW6zPf/18981568296.pdfIn PDF document text
- https://cdn.sqhk.co/wadupaxi/ijihnjc/how_to_play_poker_with_pearson_rdr2.pdfIn PDF document text
- https://nasuxixogidipan.weebly.com/uploads/1/3/4/7/134701521/merefibimo.pdfIn PDF document text
- https://cdn.sqhk.co/rizijuwet/91ZIujg/wekerapifutajanifewo.pdfIn PDF document text
- https://muverepifakapi.weebly.com/uploads/1/3/5/3/135387058/dalirewomudam.pdfIn PDF document text
- http://kabuzajo.22web.org/sixoju.pdfIn PDF document text
- http://digitalcalakk1.xyz/tin_tin_deo_art_peppermeaoo.pdfIn PDF document text
- http://lozutapezu.iblogger.org/xurusevejumafumep.pdfIn PDF document text
- http://zabumufunesomud.66ghz.com/akashaganga_malayalam_movie_song_free.pdfIn PDF document text
- https://cdn.sqhk.co/gukokefa/gzjaLL5/story_maker_online_with_certain_words.pdfIn PDF document text
- http://tebaxedo.22web.org/20414434093.pdfIn PDF document text
- https://delupizamima.weebly.com/uploads/1/3/4/5/134578079/xanelakovujud-jadafilojaw-rotafex-dufibijiriw.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://fedorahosted.org/lohitIn PDF document text
- http://guxedin.rf.gd/kigizigenazijigova.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/60019b0f-a125-43a6-aceb-c58396e2d4b1/how_to_start_lexus_is250_with_key.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/95cbabaf-0623-4259-a5cd-591655be587b/how_to_install_badland_3500_winch.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
- http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e458.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE458 | 5716 bytes |
SHA-256: bf33a22f494c7b1c6ef541e4fc2af54a83dca73d97298f6a58810a60d6b30e6d |
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font_01_sfnt_off0000f7eb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF7EB | 3720 bytes |
SHA-256: 6539b129c5cd894636dc8f40f53a156c00c8f46378ab4f137c96d687a1cff6ed |
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font_02_sfnt_off0001034e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1034E | 10580 bytes |
SHA-256: 7bbc6b49a8cfb4b349c9abc968a82161956619bacbb81eff59e3c46bf50b3ada |
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font_03_sfnt_off000127b1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x127B1 | 7460 bytes |
SHA-256: 92b02c789ec45b926818366c124b613f2c0dc41b3e641801ac20902a92b38823 |
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