MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1059.007 JavaScript
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, which is a common technique for executing malicious code. Additionally, numerous external URLs were extracted, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious content or phishing pages. The ClamAV detection and ML classifier further support the malicious nature of this file.
Machine Learning
- Nyx PDF Classifier malicious score 0.9837
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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=download+games+for+ppsspp+android
- http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/1614a40b254c93---17450382984.pdf
- http://srcchaika.ru/files/uploads/files/96008962784.pdf
- http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614a09765b32a---27561781749.pdf
- http://ooexperience.be/assets/Image/files/biguladumusefunepub.pdf
- http://chandravanshi.com/userfiles/file/31071948598.pdf
- http://www.creativitaecomunicazione.it/js/lib/ckfinder/userfiles/files/8254078893.pdf
- http://thibangoto.com/app/webroot/uploads/files/24044334045.pdf
- http://bigyikesmedia.com/home/xtremweb/public_html/consultinstitute/web/upload/files/42414796303.pdf
- http://hotechike.com/files/files/58725494100.pdf
- http://one9five.com/userfiles/files/8996941741.pdf
- https://taxfirma.com/userfiles/file/46329879885.pdf
- https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613558c15d772---detukoneta.pdf
- http://abw10thstreetne.com/uploads/files/jamekapexegog.pdf
- https://jetaime-shop.com/files/nedesomele.pdf
- http://corporatiegids.nl/uploads/files/budimo.pdf
- http://clubsahdianagalati.ro/upload/editor/file/23892317725.pdf
- https://bmw-zona.ru/uploads/file/86023468590.pdf
- http://autoscuolauniversale.it/userfiles/files/90174103406.pdf
- http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16151b7ca56360---wugusijebifa.pdf
- http://zjbfjt.com/upload/files/16716926217.pdf
- http://lyzebrno.cz/userfiles/file/36183171132.pdf
- https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/161323194e71a9---39318141133.pdf
- http://eclickapps.in/userfiles/files/rumegewed.pdf
- http://eko-gospodarstwo.eu/files/file/85873877135.pdf
- https://es21sys.com/userfiles/file/velokobogulexofilu.pdf
- http://choragwica.pl/userfiles/file/62094800769.pdf
- http://blackhorsesc.pl/userfiles/file/59370433442.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b28b.bin2d026f07a790544ce6a9548e23bec4d52b5d7dc4164394b7e7fd8479c4034893 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB28B | 14776 bytes |
font_01_sfnt_off0000d7b2.bin185f35045f3f26b915df7652c5fca1d4fa9e091e462a7bbfcf7b93ef53e4700e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD7B2 | 10828 bytes |
font_02_sfnt_off0000f075.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF075 | 16792 bytes |
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