MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, many pointing to compromised WordPress upload directories, suggesting a link farm used for phishing or distributing further malware. The presence of embedded URLs and the nature of the heuristics strongly suggest this PDF is part of a phishing campaign, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
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://coretry.ru/uplcv?utm_term=charlie+and+the+chocolate+factory+original+characters
- http://www.kidnuri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c863ca9390---98171433235.pdf
- https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/c18a273d0d68a07daa12774782a1beb9/fuvobew.pdf
- https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160985ea8cda59---doruxufide.pdf
- http://fairway.cc/images/blog//file/63574156367.pdf
- https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/1608d8103c3667---73385925746.pdf
- http://hurtmar.pl/Upload/file/vumetemetixu.pdf
- http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/oobopgj9u3a6080qcf8ir0fevu/bilefoloramujakifivat.pdf
- http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9a08b7492---57800917239.pdf
- http://bulk-supplies.com/userfiles/file/84123410311.pdf
- https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c8737e12c5a---65102879285.pdf
- http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160753bbf26db6---86095924587.pdf
- http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160895207cb26f---nivudusobegegaxek.pdf
- https://omomediacion.com/wp-content/plugins/super-forms/uploads/php/files/534cc80360b9cdc25b3606ccdd564430/53853871372.pdf
- http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/160985c1bc4c4c---4185522666.pdf
- https://leganordavigliana.it/uploads/file/mujevuzawinedir.pdf
- http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1608875f46cf18---janoveratoven.pdf
- https://vate-tire.ru/wp-content/plugins/super-forms/uploads/php/files/f9feb7fd2f273081d43905ad1711a7b0/23473904860.pdf
- https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/16085739c7862a---44711107980.pdf
- https://annekienlen.fr/imagesfile/ritewa.pdf
- https://accuratesearch.com/userfiles/file/43931139995.pdf
- http://sarlampa.ru/upload_picture/97217677987.pdf
- http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/1608fd26084592---20389778564.pdf
- https://nanyangtextile.com/userfiles/file/gonedibazariwaduxadubu.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_off0000fd77.binb044402c21ad74073bbf4a7e313597083fb7949d4e07067f25dc49456ea5a52a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD77 | 17688 bytes |
font_01_sfnt_off00012af1.bin696e078e07e0c4cea6f76a0346a6fcdb09676006a15e88699201eacee45caa49 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12AF1 | 10900 bytes |
font_02_sfnt_off000143f5.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x143F5 | 16792 bytes |
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