MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites, indicating a potential phishing or malware distribution scheme. The ClamAV detection and ML classifier strongly suggest malicious intent. The file's structure as a link farm, coupled with the use of compromised CMS uploads, points towards an attempt to lure users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://wastran.ru/uplcv?utm_term=infinite+series+calculator PDF link annotation
- https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/161405985bc6a2---bosanexijabadezepazula.pdfIn PDF document text
- http://mega-stainlesssteel.com/uploads/image/files/70981590046.pdfIn PDF document text
- http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137be81d19de---52525663159.pdfIn PDF document text
- http://gernano.eu/gfx/userfiles/files/66024599904.pdfIn PDF document text
- http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/161409c8def02c---41195368512.pdfIn PDF document text
- http://nagymester.com/userfiles/file/24156430616.pdfIn PDF document text
- http://zygzak.eu/foto_dane/wysiwyg/File/58693684753.pdfIn PDF document text
- http://semihkerpiccilervesupersound.com/upload/file/pexarinutej.pdfIn PDF document text
- https://aspirans.com/files/file/pujaxowib.pdfIn PDF document text
- http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614130665dd15---21625486125.pdfIn PDF document text
- https://adci.vn/data/upload/file/xolesobafulavakajif.pdfIn PDF document text
- http://vigova.com/Images_upload/files/sizuzorozoviwuwavu.pdfIn PDF document text
- http://intproplaw.com/admin/uploads/file/pibinizotuxosa.pdfIn PDF document text
- http://www.centralperdana.com/file/55051576441.pdfIn PDF document text
- http://pinturasoltra.com/images/slider/files/zofadozudetebuvidibe.pdfIn PDF document text
- http://goodwill.pl/userfiles/file/63074935409.pdfIn PDF document text
- https://livre-d-art.com/ckfinder/userfiles/files/zeroberodofibagagomevif.pdfIn PDF document text
- http://barefoot.pl/userfiles/file/37248230017.pdfIn PDF document text
- https://longhoang.vn/upload/files/72765450511.pdfIn PDF document text
- https://kubermatkaplay.com/ckfinder/userfiles/files/ratawofaxumo.pdfIn PDF document text
- https://vietnam-pump.com/userfiles/file/nomobibejavunolajuwulefaw.pdfIn PDF document text
- https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/67d449865f190fc7a4e2fbff1fd164d5/35362317426.pdfIn PDF document text
- http://brcassociati.com/userfiles/files/wixelo.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_off0000e667.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE667 | 10380 bytes |
SHA-256: eafc9c56651d5c6cf468867f44d94bdde2e71bb45460a13251cbd6b2456ca20b |
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font_01_sfnt_off0000fe09.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE09 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001161b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1161B | 19092 bytes |
SHA-256: 351a7c5b7a79d942e381c0711d0d563a2555d51f99a1927831afaaf549bf8463 |
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