MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The `wkhtmltopdf` authoring application and the presence of obfuscated document body text further indicate a non-standard, potentially malicious document structure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://synerhu.ru/uplcv?utm_term=how+to+print+revit+to+pdf PDF link annotation
- http://ain.proximeo.com/ckfinder/userfiles/files/88774138562.pdfIn PDF document text
- https://pointvirgule.ca/upload/editor/file/dedepokuzinovine.pdfIn PDF document text
- http://baikalspring.ru/ckfinder/userfiles/files/30052413693.pdfIn PDF document text
- https://profm.hu/files/file/15474994590.pdfIn PDF document text
- https://archcosmeticstudio.com.au/wp-content/plugins/super-forms/uploads/php/files/3e664a14043ae2b06e6d7db8fe7c277d/99358220563.pdfIn PDF document text
- http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139659db6db1---68209280529.pdfIn PDF document text
- https://bokaichenyu.com/upload/files/81820795951.pdfIn PDF document text
- http://mxag.com/upload/browse/file/foniludelivunobomamido.pdfIn PDF document text
- http://a-mega.ua/images/uploads/file/78925135168.pdfIn PDF document text
- http://xn--jt2b56wn0ap2a.com/upload/file/202109040123384012.pdfIn PDF document text
- http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/161380033d2c69---nuwamililipimejafeze.pdfIn PDF document text
- https://reparation-mobile.net/userfiles/file/baderakilowivabuv.pdfIn PDF document text
- http://lafiestadelmoto.cz/files/file/fezopugafikob.pdfIn PDF document text
- https://strefaokazji.pl/uploaded/file/mojozurulovifaxolodusim.pdfIn PDF document text
- http://coral-travel66.ru/admin/ckfinder/userfiles/files/44251961185.pdfIn PDF document text
- http://kpotplace.com/uploads/files/wigupememegivetileditik.pdfIn PDF document text
- http://stoka-saarlouis.de/userfiles/file/gedipazonupalepedanasalas.pdfIn PDF document text
- http://demirlermetal.com/resimler/files/nopineb.pdfIn PDF document text
- http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/b4dd20182e1c70d07b80e187023c6814/92825826069.pdfIn PDF document text
- https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f555bb4cc2---runum.pdfIn PDF document text
- https://asken.as/bilder/file/tolebinukerunebe.pdfIn PDF document text
- https://viboot.com/ckfinder/userfiles/files/kiruged.pdfIn PDF document text
- http://mh-gartengestaltung.de/userfiles/file/xefudesaj.pdfIn PDF document text
- https://riolospettacoli.it/filesUploads/file/34884263003.pdfIn PDF document text
- http://mikol-styl.cz/userfiles/file/62695041188.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_off0000c529.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC529 | 16240 bytes |
SHA-256: ea6789d938ef867cdea0984d30e841a013431495d822821c0c1879e26e71a238 |
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font_01_sfnt_off0000ee67.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE67 | 10260 bytes |
SHA-256: 71629def7de57164b8014775cc6d4dea5298685ad1739bc2a6f4ceade87b4af5 |
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font_02_sfnt_off00010592.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10592 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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