MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains a large number of embedded external links, identified as a 'PDF_SEO_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM'. The ML classifier and ClamAV heuristic strongly indicate maliciousness, with ClamAV identifying it as 'Pdf.Phishing.Trojan'. The primary function appears to be redirecting users to a multitude of other PDF documents, potentially for phishing or malware distribution.
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://maypoin.ru/strik?utm_term=how+to+start+a+persuasive+essay+examples PDF link annotation
- https://cdn-cms.f-static.net/uploads/4365657/normal_603b2773305d4.pdfIn PDF document text
- http://optalpha.com/lezituxavifokalira80kkm.pdfIn PDF document text
- http://findssldz.xyz/kigewowejoos0w0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370778/normal_60321b08141d2.pdfIn PDF document text
- http://cabinetshub.xyz/lego_harry_potter_1-4_hogwarts_castle_gold_bricksh2way.pdfIn PDF document text
- http://lnstagramverifiedsbadgesforms.com/forest_subway_escape_run_free_running_adventuresakpl0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4386091/normal_60109c4695c7e.pdfIn PDF document text
- http://skidki-day.site/pilufiluzitasokukeh5l7.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://17673d3b-e5d0-4e0e-8211-f079fadf35f5.filesusr.com/ugd/13ae68_6eedf91ec4d64c558a88f4ebd3eb0a04.pdf?index=trueIn PDF document text
- https://02408c19-b9f6-4996-a596-1d5b7e46c8d3.filesusr.com/ugd/c83fdb_8e3efb84c3b145bc8fed14e467b0cfae.pdf?index=trueIn PDF document text
- https://9f53eded-325d-4e02-8430-7c09bd872488.filesusr.com/ugd/e04405_0acfdddaf7bd46429bf749fae6631a28.pdf?index=trueIn PDF document text
- http://nepupiborama.rf.gd/5709716952.pdfIn PDF document text
- https://22fea36a-5e19-4af1-b4aa-fe6e1efe0ee9.filesusr.com/ugd/b5a188_ef064ad3b69d4f3899d29f8d4ac2def2.pdf?index=trueIn PDF document text
- https://ebcfae26-b4e4-4f1a-a5b2-c5bdbddc1bdf.filesusr.com/ugd/259f90_a08600f8431b458aa5e30d1b6e873c51.pdf?index=trueIn PDF document text
- http://vegefozexus.rf.gd/ratazenivugotej.pdfIn PDF document text
- https://s3.amazonaws.com/tigovatolis/adding_and_subtracting_like_fractions_free_worksheets.pdfIn PDF document text
- https://s3.amazonaws.com/mukut/75737043458.pdfIn PDF document text
- https://0fc0baf9-b884-4fcd-968e-f93c0f938930.filesusr.com/ugd/68ec51_6858d4509cfd4f03aca3be0a05c555e4.pdf?index=trueIn PDF document text
- http://rujemivegelap.epizy.com/charoen_pokphand_group_annual_report_2018.pdfIn PDF document text
- https://s3.amazonaws.com/bisiku/mtg_burn_sideboard_guide.pdfIn PDF document text
- https://s3.amazonaws.com/makixibawumebol/bojoru.pdfIn PDF document text
- https://s3.amazonaws.com/jejulurowev/3d_text_video_maker_for_android.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_off0000fdd4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDD4 | 5248 bytes |
SHA-256: cf6de18583c1e6f8a6a81cf48ec2f8bd6316b075fdc8870a2a25d209e5b09765 |
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font_01_sfnt_off00010fb0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10FB0 | 10440 bytes |
SHA-256: dbefec7cb28633e8d7b055e7c140004d18131ce6d4796c9adb58058908b7de0c |
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