MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file contains a large number of embedded URLs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing campaigns.
Machine Learning
- Nyx PDF Classifier malicious score 0.9820
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://cructi.ru/uplcv?utm_term=original+shareit+apk PDF link annotation
- http://britishcytology.org.uk/ckfinder/userfiles/files/44903149118.pdfIn PDF document text
- https://unitedfightalliance.com/ckfinder/userfiles/files/20752166085.pdfIn PDF document text
- http://bellina.pl/userfiles/file/98188934015.pdfIn PDF document text
- http://usmleworkout.com/files/file/liwinugebem.pdfIn PDF document text
- https://dbhattacharjee.com/ckfinder/userfiles/files/51346449795.pdfIn PDF document text
- https://ego-sofa.tw/uploads/files/202109111418085527.pdfIn PDF document text
- http://www.juniorcollege.cl/ckfinder/userfiles/files/15748535820.pdfIn PDF document text
- https://xpress2.eu/ckfinder/userfiles/files/56132181237.pdfIn PDF document text
- https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/051soddubm97gh4fejlceku5m7/wamidapizirizogupanu.pdfIn PDF document text
- https://www.prshots.com/ckfinder/userfiles/files/80462576691.pdfIn PDF document text
- http://staresecurity.com/userfiles/file/4808833137.pdfIn PDF document text
- http://coutleelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/31450230256.pdfIn PDF document text
- http://ceroki.com/image/files/52980900446.pdfIn PDF document text
- http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613dc567d9773---mumagatipine.pdfIn PDF document text
- http://kowel.com/ckfinder/userfiles/files/1631193960.pdfIn PDF document text
- http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16141ddc693811---3043771623.pdfIn PDF document text
- http://15449010.com/FileData/ckfinder/files/20210908_E10BC6140DC73A28.pdfIn PDF document text
- http://chia4kids.ru/ckfinder/userfiles/files/miwupekavujunikamakob.pdfIn PDF document text
- http://vswet.ru/f/rixorafuvevofipa.pdfIn PDF document text
- http://mq-water.net/upload/jefumanowofabofokelapapu.pdfIn PDF document text
- https://drnanemilk.com/tctt/sites/aaa/file/fixekugagew.pdfIn PDF document text
- https://art-eria.pl/mandarynka/pliki/files/19815662338.pdfIn PDF document text
- http://thenikharvconsultancy.com/userfiles/file/lodobavewadejeju.pdfIn PDF document text
- http://fc-junajted.com/upload/datoteke/89217426368.pdfIn PDF document text
- https://laundrybyconrads.com/nbloom/fckuploads/file/mefokeb.pdfIn PDF document text
- http://szentdorottyapatika.hu/files/gevegojosakunezapasariro.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_off00010d59.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D59 | 10528 bytes |
SHA-256: 2ae6b8670f8e41fd92dc0aef554114aafebf3b178c97f6b0f10a851f88924a07 |
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font_01_sfnt_off00012550.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12550 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00013d62.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13D62 | 19352 bytes |
SHA-256: 7a699e731b6b45cbad20b6a4cd200037bac3663a0dc8fcbcad4090067440c1e7 |
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