MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous links, many pointing to compromised WordPress upload directories and other potentially malicious domains, suggesting a link farm used for phishing or malware distribution. The document body, though heavily obfuscated, contains keywords related to 'automatic expansion valve pdf' and 'wkhtmltopdf', likely serving as a lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://fontanarosaserigrafia.it/userfiles/file/zutibilovoju.pdf In PDF document text
- http://weberstellen.ch/userfiles/file/27472885050.pdfIn PDF document text
- http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160bd6d799c7e6---17964615593.pdfIn PDF document text
- https://aplusadvance.com/naver_editor/data/file/figudijobokitorakagekuvog.pdfIn PDF document text
- https://muacash.com/webroot/img/files/97165528613.pdfIn PDF document text
- https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/ke9aj7eriog60evi5ttcts5ot3/30564625411.pdfIn PDF document text
- http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ce680ea387---pakerovikubegusuveja.pdfIn PDF document text
- https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/1608873ffcf964---milevo.pdfIn PDF document text
- https://777mto.org/contents//files/60724087600.pdfIn PDF document text
- https://www.zulilighting.com/wp-content/plugins/super-forms/uploads/php/files/4de573324ec673e5ab4c9e4f7c34a4b2/58224384047.pdfIn PDF document text
- https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/b197afe1a568bdcf701d3e9c79ca8f18/78535572629.pdfIn PDF document text
- https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/160b8b4c7bd927---vanusododulaka.pdfIn PDF document text
- http://elmbbq.com/uploads/files/79803211421.pdfIn PDF document text
- http://aweibel.com/Photo/file/13529674996.pdfIn PDF document text
- http://beloezoloto.ru/userfiles/file/81413539420.pdfIn PDF document text
- https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/1733niv8odm9o3eugojmr55qhk/26398483277.pdfIn PDF document text
- http://burattinojatek.hu/userfiles/file/sobojuzev.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=automatic+expansion+valve+pdfPDF 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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00010a71.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A71 | 5324 bytes |
SHA-256: 685ff66b152a5bd1f0c9488942acdd481b9ecd9415413c64799bdacbb587c5f0 |
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font_01_sfnt_off00011c83.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C83 | 10696 bytes |
SHA-256: 51246c65b25885249f48fb1812ae039482c55d549fc9622e4243a3ad7c2cb2e7 |
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