MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The sample was identified as malicious by ML classifiers and ClamAV, with multiple heuristics indicating it functions as a link farm. The PDF contains numerous embedded URLs pointing to potentially compromised websites, suggesting an attempt to redirect users to malicious content or phishing pages. The presence of 'utm_term' in one URL further supports a phishing or malicious advertising context.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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=mouse+gif+funny PDF link annotation
- http://kag.fr/userfiles/file/56325334473.pdfIn PDF document text
- http://www.ccengis.be/applications/ckeditor/addons/ckeditor/ckfinder/userfiles/files/rutexesepotozura.pdfIn PDF document text
- http://architects-desk.com/uploadsfile/pabolanawidugizi.pdfIn PDF document text
- http://worldtile.net/jangheung/userfiles/file/pozefelab.pdfIn PDF document text
- http://radiosalsa.fr/php/rs/filesupload/file/34435692582.pdfIn PDF document text
- http://themetamorphoseprogram.com/userfiles/file/49679227044.pdfIn PDF document text
- http://kimhoatra.com/upload/fckimagesfile/18633837956.pdfIn PDF document text
- https://jeneifogaszat.hu/cikkdata/files/38446926398.pdfIn PDF document text
- http://nickels.design/ckfinder/userfiles/files/47068443764.pdfIn PDF document text
- http://insei.eu/userfiles/files/29713315369.pdfIn PDF document text
- https://stephankeppel.com/userfiles/file/85756604412.pdfIn PDF document text
- http://siamsnail.com/media/userfiles/files/55632300092.pdfIn PDF document text
- http://www.jobsincrete.gr/images/_user_na/file/gomobezokuxaledit.pdfIn PDF document text
- https://maychieuvinh.vn/upload/files/soxisalemeledixuwaveboka.pdfIn PDF document text
- https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/16137079c16306---77196209116.pdfIn PDF document text
- http://quaisetoiles.fr/img_pages/file/89983939755.pdfIn PDF document text
- https://asiastudy.in/ckfinder/userfiles/files/kever.pdfIn PDF document text
- http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1614137d69b1a7---wofatesedib.pdfIn PDF document text
- http://voijin.com/userfiles/files/libajek.pdfIn PDF document text
- http://tajesink.com/Uploadfiles/files/sabawiligexisobaz.pdfIn PDF document text
- http://goldnumber.info/userfiles/file/nafuxu.pdfIn PDF document text
- https://panificioilcavaliere.it/userfiles/files/zuvekir.pdfIn PDF document text
- https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/627300335e68bae01dbcda801728be6c/44887435188.pdfIn PDF document text
- https://voxel-avocats.fr/uploads/file/In 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_off0000bde7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBDE7 | 10192 bytes |
SHA-256: 95bbff8897940ac58f25b1d437c528aaf63cf304190fba0a16fbaf0f2e2559dd |
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font_01_sfnt_off0000d4e5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD4E5 | 19148 bytes |
SHA-256: 8803e72aa978843dea0cf9178f48dcac9f2cc00162fb88a5b303593147226c73 |
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font_02_sfnt_off0001066b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1066B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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