MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded JavaScript, which is often used to exploit PDF vulnerabilities or redirect users. The presence of a link farm pointing to multiple distinct hosts, some of which appear to be compromised WordPress installations, further supports a phishing or malware distribution attack pattern. The primary IOCs are the URLs found within the document, which likely lead to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
Heuristics 7
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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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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 http://cuboni.com/uploadfile/hong202106241027089707.pdf In PDF document text
- http://cadelupo.it/userfiles/files/57905357141.pdfIn PDF document text
- https://ascinfratech.com/clientprojects/trading/file/49636812102.pdfIn PDF document text
- http://pitin-akutsu.com/js/upload/files/96983124611.pdfIn PDF document text
- http://wenxuezj.com/images/File/namijupalek.pdfIn PDF document text
- https://bio-obst-und-gemuese.de/userfiles/file/nonanawexisafexe.pdfIn PDF document text
- https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b80344486f4---vesesubu.pdfIn PDF document text
- http://soles2walk.cz/data/file/bigifisimonamuga.pdfIn PDF document text
- http://dj-maily.com/uploads/pages/files/wezawufebiwezuminipima.pdfIn PDF document text
- http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfd90f2979f---92257547203.pdfIn PDF document text
- http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071b1b07742d---kefipi.pdfIn PDF document text
- https://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/1607433e410727---77055635416.pdfIn PDF document text
- http://clinicaveterinariacene.com/userfiles/files/58977042023.pdfIn PDF document text
- http://gemaeldeundobjekte.de/uploads/files/mojikaxaponi.pdfIn PDF document text
- https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160bc6ba9168d1---90209480505.pdfIn PDF document text
- http://sgrappresentanze.eu/userfiles/files/zagebezeligew.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=anterior+perineal+resectionPDF 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_off0000d56f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD56F | 17816 bytes |
SHA-256: f0d6ca4caaea53c00f97e0147edc4dbad464d5e6b8155b486a79322cf83c9bcf |
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font_01_sfnt_off000103a5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x103A5 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011bbc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11BBC | 10348 bytes |
SHA-256: 1e6a0ec4bf7a5db9f3a01974fccadc9943f25e11608374ff9c5439a8404775c6 |
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