MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a large number of external links, many of which point to disposable hosting or compromised CMS upload directories, indicating a link farm designed for malicious redirection. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery. The document body is heavily obfuscated, preventing a clear understanding of its specific lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9893
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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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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 http://poliinc.com/upload/files/5848389683.pdf In PDF document text
- https://stepweystudy.com/ckfinder/userfiles/files/56941283175.pdfIn PDF document text
- http://seyrimerdin.com/userfiles/file/84475331944.pdfIn PDF document text
- https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/1n3stml2qq2ltdrm1aupm0nlks/gaxiribigomenuruv.pdfIn PDF document text
- https://minlinart.com/archive/upload/files/4281493824.pdfIn PDF document text
- https://simpangkanan.com/contents/files/niboraxifoximo.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138373918ad9---6314032682.pdfIn PDF document text
- https://micsys.in/userfiles/file/zigukolojigokunaberemola.pdfIn PDF document text
- http://heaig.org/editor/ckfinder/userfiles/files/bivuzevatukilamoros.pdfIn PDF document text
- http://riverla.vn/uploads/userfiles/file/23661820343.pdfIn PDF document text
- http://smart.sut.ac.th/tsme/src/lib/ckfinder/userfiles/files/govuwekimupemekova.pdfIn PDF document text
- http://wooshin.kr/uploaded/file/472231432612fe025381c2.pdfIn PDF document text
- http://stapper.de/sites/default/files/userfilesfile/daxuk.pdfIn PDF document text
- http://sm.ac.th/ckfinder/userfiles/files/16297172760.pdfIn PDF document text
- https://egyptsuntours.com/userfiles/files/mofugugufarirukir.pdfIn PDF document text
- https://badanie-wody.pl/galeria/file/pevebivasekoresakid.pdfIn PDF document text
- http://openendrep.com/userfiles/files/sametilanaked.pdfIn PDF document text
- http://smenergy.kr/uploaded/file/138224435613512db82adc.pdfIn PDF document text
- http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613db9038a6de---fazubikutazazasudus.pdfIn PDF document text
- http://amadpich.com/userfiles/file/84145436276.pdfIn PDF document text
- http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/rj1vvsmpdrtbo7ej0ugu0i6pkv/gudojadodizirerirozof.pdfIn PDF document text
- http://nj-rshb.com/v15/Upload/file/2021941218279673.pdfIn PDF document text
- https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/cf10cf5d987bedd25fc211c36568ccdc/nedokazutapaxakedexuval.pdfIn PDF document text
- https://doellefjelde-mussemarked.dk/images/newsmail/file/25171082370.pdfIn PDF document text
- https://abrasco.org.br/ckfinder/userfiles/files/welanudebowadosuba.pdfIn PDF document text
- https://insolite.lu/img/userfiles/files/56347745707.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=ghost+whisperer+season+1+full+episodesPDF link annotation
- 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://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_off0000b3b6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB3B6 | 10872 bytes |
SHA-256: 54a4a15ad276bc2e050298e436155e7b94fe5bd84c6824caa0e1c4aacfc75327 |
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font_01_sfnt_off0000cced.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCCED | 16012 bytes |
SHA-256: 72d233b73920adf30a500791a009571a49454336e20e14982a0de1d1870377e6 |
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font_02_sfnt_off0000f647.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF647 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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