MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically identified as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics indicates a deliberate effort to obscure the final malicious destination through multiple redirects.
Machine Learning
- Nyx PDF Classifier malicious score 0.9972
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://infrive.ru/uplcv?utm_term=reversing+hermon+pdf PDF link annotation
- https://tgvl.in/uploads/fck/files/81193444735.pdfIn PDF document text
- https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/d199ad09ca0ba980fd4d3bb605e321a8/fubekef.pdfIn PDF document text
- https://prestinireedcorp.com/userfiles/files/22732332923.pdfIn PDF document text
- https://profession-your-dr.com/uploads/files/202109131618374355.pdfIn PDF document text
- http://qapoll.com/2015/vat/upload/files/razipiwixujasefop.pdfIn PDF document text
- http://annamsaigonlaw.com/upload/files/32847333560.pdfIn PDF document text
- http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/16134526d882c2---80435593523.pdfIn PDF document text
- https://www.karelo.com/uploads/File/54428767319.pdfIn PDF document text
- http://studiotecnicofrisoli.com/userfiles/files/49352512005.pdfIn PDF document text
- http://spodne-pradlo-2bpoint.sk/UserFiles/File/nofonesobisinetudeva.pdfIn PDF document text
- https://10glazsikeyrosa.ru/file/padofebosopanofafezalel.pdfIn PDF document text
- http://zjgyuanhong.com/v15/Upload/file/20219171248252303.pdfIn PDF document text
- https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fb447aeae0---wetapuguganorizudex.pdfIn PDF document text
- http://nhuaduongnhapkhauaz.org/upload/files/sorewujikoporewi.pdfIn PDF document text
- http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/1612f0982cd1e9---wimojake.pdfIn PDF document text
- https://hoakhanh.vn/uploads/image/files/bomipamamol.pdfIn PDF document text
- https://www.ogblfrontaliers.fr/wp-content/plugins/super-forms/uploads/php/files/ui9qgaagt8nee1cp1to8jnm74q/mesopaxorerarevelexezivok.pdfIn PDF document text
- http://realcomfort.ru/content/upload/file/52487478844.pdfIn PDF document text
- http://aardbeienfeesten.nl/uploadimages/files/15716116032.pdfIn PDF document text
- http://www.mamafoundation.cz/ckfinder/userfiles/files/89580233298.pdfIn PDF document text
- http://tatvideo.ru/ckfinder/userfiles/files/46596019480.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_off0000c2bb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC2BB | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000dad2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDAD2 | 10752 bytes |
SHA-256: 6cba11d4c896babc858dfa0f3996a9ffee1bc246962a97e3d6f675bc39c0d03c |
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font_02_sfnt_off0000f31d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF31D | 20776 bytes |
SHA-256: 01ad13ec1115d59c03df68f04930c78d806974fde0d2e78293fe362216e311e6 |
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