MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous external URIs and links to compromised or disposable hosting domains, suggesting it functions as a link farm to lure users to malicious sites. The document body is heavily obfuscated and unreadable, providing no direct content clues, but the heuristic firings strongly suggest a malicious intent to redirect users.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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 https://archism.ru/uplcv?utm_term=gifs+als+hintergrund+android PDF link annotation
- http://indigobaby.eu/upload/files/guniradifajubiletafar.pdfIn PDF document text
- http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613932e9a961b---86051049064.pdfIn PDF document text
- http://carbonelite.ru/file/lewarideriluguguredotub.pdfIn PDF document text
- https://groupunsur4.com/contents/files/vubowuzi.pdfIn PDF document text
- https://perfecthospitals.com/ckfinder/userfiles/files/15885494247.pdfIn PDF document text
- http://arhive.np-sp.ru/img/file/kubixidow.pdfIn PDF document text
- https://cafepiolho.com/uploads/assets/22473897986.pdfIn PDF document text
- http://xn--80aafbkbafwdti1ahihccrg.xn--p1ai/pict/file/lemologopamuvawejoxidix.pdfIn PDF document text
- https://minhvuongthuphap.com/upload/ck/files/pagiledusurimuxi.pdfIn PDF document text
- http://textstricker.de/benutzerdateien/18836943442.pdfIn PDF document text
- http://szpitalstrzelin.pl/userfiles/files/xuwozixameridesineve.pdfIn PDF document text
- http://archiw.gbpopatowiec.pl/img/upload/files/bategexoralimisubavo.pdfIn PDF document text
- https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/161410952a8bd1---jomulexabegik.pdfIn PDF document text
- https://vaitinhdien.com/app/webroot/upload/files/ragasefunirumivodak.pdfIn PDF document text
- http://elitakhealing.com/ckfinder/userfiles/files/veguzevemim.pdfIn PDF document text
- http://dongzzang.com/userfiles/file///70215802739.pdfIn PDF document text
- https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/16137f0bd81d3d---nexubonelobasexo.pdfIn PDF document text
- http://riskhedgetech.com/uploaded/file/1605778548613a72b553ef5.pdfIn PDF document text
- http://kursadowicz.pl/Upload/file/guwor.pdfIn PDF document text
- http://allier-genealogie.org/File:/jalusudodefapaduxavom.pdfIn PDF document text
- http://nato-denkmal.de/uploads/file/73603900466.pdfIn PDF document text
- https://soi.icami.mx/ckfinder/userfiles/files/gobeta.pdfIn PDF document text
- http://dangkydoanhnghiep.org/hinhanh_fckeditor/file/98000892982.pdfIn PDF document text
- http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16130c6e2b79a8---bovobemivojotefu.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://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_off0000d3f8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD3F8 | 10772 bytes |
SHA-256: 5188c9d1d3e8afb20f6622fbac8dbe548cabfe94f8e7a3ce0a092faa3b1e393f |
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font_01_sfnt_off0000ec7e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC7E | 21276 bytes |
SHA-256: 0b5b9848ebba89410b0adac157038337863f1513fb0ceac7214d4583c970c235 |
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font_02_sfnt_off00012081.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12081 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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