MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file exhibits characteristics of a link farm, containing numerous external links to various domains, many of which are hosted on disposable infrastructure. The document body, though heavily obfuscated, suggests a lure related to a book search. The presence of a PDF_SEO_LINK_FARM heuristic firing, along with a high ML score and ClamAV detection, strongly indicates malicious intent, likely for phishing or malware distribution.
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://nipisod.ru/award?keyword=bring+down+the+house+book+pdf PDF link annotation
- https://cdn.sqhk.co/wupifufexix/1ChidIj/atheros_ar9485wb-_eg_windows_10_driver.pdfIn PDF document text
- https://cdn.sqhk.co/pibilebomek/ijgcjbS/gewenowi.pdfIn PDF document text
- http://help-copyrightviolationhelpcenter.com/70496428659kghya.pdfIn PDF document text
- https://cdn.sqhk.co/zuxatotukaru/pijghgc/giwomarenajo.pdfIn PDF document text
- https://cdn.sqhk.co/kewawukufiju/31Ljegh/ben_10_rustbucket_real_life.pdfIn PDF document text
- https://cdn.sqhk.co/widagawinud/25hgiaa/19387719264.pdfIn PDF document text
- https://cdn.sqhk.co/vumulevezuf/jg118jd/tangled_2_movie_in_tamil.pdfIn PDF document text
- https://cdn.sqhk.co/waketeni/flmcKl7/drive_games_hill_climb_racing_download.pdfIn PDF document text
- https://cdn.sqhk.co/dabozijide/4gcibhg/remusitegekarurobube.pdfIn PDF document text
- http://damvglaz6.xyz/what_makes_byzantine_art_uniqueekidv.pdfIn PDF document text
- http://summ-green.fun/que_es_taller_artesanal_definicionks2sq.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/fd0701b3-cd8a-44cb-9c63-e0f1fa5c71f2/pefasa.pdfIn PDF document text
- https://s3.amazonaws.com/nawosineromigi/dexasi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2ec213ff-b57d-4983-805e-aa6b11bbb388/cmo_aliviar_el_dolor_de_una_vacuna_en_el_brazo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e75bfeee-db1b-4bdc-8cf0-faf8573c5767/wodufubuvirus.pdfIn PDF document text
- https://s3.amazonaws.com/wudibirewuduto/hearthstone_arena_guide_october_2019.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e6f18e83-9619-4d37-8dd1-f646dc2ad9d8/what_is_magna_carta_of_india.pdfIn PDF document text
- https://5e6d3f51-9b35-4a29-baf4-1f036254a461.filesusr.com/ugd/99a8f2_1f490093067641a5a38006a08576aae5.pdf?index=trueIn PDF document text
- https://c96d0889-97fb-4213-90a4-a08ae01970e6.filesusr.com/ugd/ed32f2_94293e0eb7564f4098505c31242ac2ea.pdf?index=trueIn PDF document text
- https://6843e3eb-5573-46e1-90a0-370cfc2b4a0d.filesusr.com/ugd/89b1bc_50daf31ba2664b6c80dc2e052c563427.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
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00015679.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15679 | 5408 bytes |
SHA-256: 826013e2ca82c6bfc4eab3ead2460ee4ece813c6634680a82b6c9dc737571a9d |
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font_01_sfnt_off000168f0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x168F0 | 11224 bytes |
SHA-256: 63b1aeb6dc42fb11d431bf03afc752d3e07d7fdf4468954e75236c83294dab85 |
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