MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, indicating a link farm. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. The presence of multiple PDF-specific heuristics related to URI and link farms reinforces this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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 http://szerecsengyogyszertar.hu/editor_up/85517679352.pdf In PDF document text
- http://bettaletroom.com/file_media/file_image/file/14704365426.pdfIn PDF document text
- http://unsersohn.com/images/file/2781397184.pdfIn PDF document text
- https://2b3la571ga-70p.com/contents/files/97481337081.pdfIn PDF document text
- https://oancora.com/ckfinder/files/dowosol.pdfIn PDF document text
- http://upsshop.ru/ckfinder/userfiles/files/lafuvibivopagivu.pdfIn PDF document text
- http://onlinepravenconsultant.com/uploads/wysiwyg/files/87016497782.pdfIn PDF document text
- http://gyarmatilovastorna.hu/userfiles/file/3827918337.pdfIn PDF document text
- https://postelezmasivu-ostrava.cz/ckfinder/userfiles/files/56121353014.pdfIn PDF document text
- https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/nadvre4cgfl2ilvg3770f721ka/mukosetixetumin.pdfIn PDF document text
- http://altadirezione-consulting.it/userfiles/files/wolaxow.pdfIn PDF document text
- http://quesnelfoundation.ca/userfiles/file/tuzujalavodozunogowitewer.pdfIn PDF document text
- http://myphammonly.com/luutru/files/41424641293.pdfIn PDF document text
- http://xenangheli.vn/public/files/xuwanifisoxibenoraxa.pdfIn PDF document text
- http://caycanh.vn/images/fck/file/regifavewitivawusiwinef.pdfIn PDF document text
- https://aimara-bg.com/userfiles/file/bidofak.pdfIn PDF document text
- http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16147e8e977849---fapan.pdfIn PDF document text
- https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/8iq0g3smb1ko0mrmbe22nt760a/8080804457.pdfIn PDF document text
- http://fantasymusic.it/userfiles/files/42790551362.pdfIn PDF document text
- http://cec-intl.ru/app/webroot/files/file/woxatebiw.pdfIn PDF document text
- http://loscogliodifavignana.it/userfiles/files/mesowerenugap.pdfIn PDF document text
- http://www.rosabrockenhaus.ch/ckfinder/userfiles/files/54137136206.pdfIn PDF document text
- https://norservis.com/files/files/6750479621.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=xiaomi+poco+x4+release+datePDF link annotation
- 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_off0000b23f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB23F | 16876 bytes |
SHA-256: c935d0e256bb351de53aa701992ed5ca13280552136cf2372d05977b39364925 |
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font_01_sfnt_off0000de34.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE34 | 10756 bytes |
SHA-256: 7f17cc37cd797fb3a92d32b59c7be7f6227587738cea3093782939867c976443 |
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font_02_sfnt_off0000f705.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF705 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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