MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm. It contains numerous embedded URLs pointing to external sites, many of which are hosted on compromised or disposable domains, suggesting a phishing or malware distribution scheme. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically indicates a non-clustered link farm on disposable hosting, reinforcing the malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
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://wastran.ru/uplcv?utm_term=adblock+browser+beta PDF link annotation
- https://soportedevida.mx/ckfinder/userfiles/files/6699737437.pdfIn PDF document text
- https://triatlonshop.cz/userfiles/file/fumowejifupupalogotogibu.pdfIn PDF document text
- http://pepinieres-soupe.com/userfiles/file/jobunajumodi.pdfIn PDF document text
- http://stellarp.com/userfiles/file/fufeli.pdfIn PDF document text
- https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/f7f5d5e6bd2d85aad202d23328214e08/salamepi.pdfIn PDF document text
- http://rurisnet.org/images/file/1930124016.pdfIn PDF document text
- https://aquarell.ro/userfiles/file/76266850938.pdfIn PDF document text
- http://arrhythmiaclinic.com/userfiles/file/20210907142715.pdfIn PDF document text
- http://redigonda.it/userfiles/files/47735087963.pdfIn PDF document text
- https://astdubai.co/userfiles/files/79913273407.pdfIn PDF document text
- http://kiuruvedenlukio.fi/tiedostot/file/pepigazug.pdfIn PDF document text
- https://icicle-mountaineering.ltd.uk/ckfinder/userfiles/files/9447691357.pdfIn PDF document text
- http://mrtowing.ca/Lawyers/userfiles/file/pugenomozeje.pdfIn PDF document text
- https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f9d5c17bb4---gaxusolarerez.pdfIn PDF document text
- http://agmapure.com/upload/files/4766974032.pdfIn PDF document text
- https://iaido-iaijutsu.ru/userfiles_exc/1115571406.pdfIn PDF document text
- http://villkasz.hu/editor_up/zunixobazipujotifesege.pdfIn PDF document text
- http://orzo.cz/uploaded/files/jivakomijogufofob.pdfIn PDF document text
- https://f27szerviz.hu/upload/files/radodajodevijegi.pdfIn PDF document text
- https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1613bace99f2fc---75200820286.pdfIn PDF document text
- http://goodfortune.hk/UpLoadFile/file///59089142077.pdfIn PDF document text
- http://f1-rennsimulatoren.de/userfiles/file/6563483739.pdfIn PDF document text
- https://thic.muki001.com/plugin/ce1/ckfinder/userfiles/files/10143743880.pdfIn PDF document text
- http://amuseonline.com/absite/userfiles/file/wiveneniligokorinakub.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_off0000fd45.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD45 | 10464 bytes |
SHA-256: 63c1d5176bc11730568837bd2dd6a557cf03a38362f28c7e52c351d55d053ae0 |
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font_01_sfnt_off0001154b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1154B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00012d5d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12D5D | 19228 bytes |
SHA-256: a0d4be84f4da8946fe77a8887ae06d7bccff479355bd3dd0273d825cbc212777 |
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