MALICIOUS
146
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was detected as malicious by ClamAV and an ML classifier, and exhibits characteristics of a callback phishing lure. It contains numerous links to disposable domains, suggesting an attempt to obscure the true destination or host a large number of lures. No scripts were extracted, but the PDF structure and heuristics indicate a phishing attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://adacu.org/userfiles/file/20210916105235.pdf In PDF document text
- https://radekslodkiewicz.pl/files/file/20652080888.pdfIn PDF document text
- http://gddfboiler.com/uploads/files/37534081963.pdfIn PDF document text
- http://biolabsrl.org/userfiles/files/zuteginilanamonovaraza.pdfIn PDF document text
- http://luluscafeonline.com/uploads/files/piretugasegiwom.pdfIn PDF document text
- https://indirimlipin.com/calisma2/files/uploads/91266971058.pdfIn PDF document text
- https://syteq-pro.com/userfiles/file/71856998562.pdfIn PDF document text
- https://zerling.eu/nico/images/files/supuzaviwanap.pdfIn PDF document text
- http://skolky.info/foto/images/file/ropitimev.pdfIn PDF document text
- http://studioiulianella.it/userfiles/files/repajixinimuw.pdfIn PDF document text
- http://tinhdauvietnam.vn/upload/files/29384913602.pdfIn PDF document text
- http://salamino.pl/userfiles/file/40406395424.pdfIn PDF document text
- http://kidzcastleschool.com/singhania/downloads/file/45669309626.pdfIn PDF document text
- http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16143446a170e1---19477935397.pdfIn PDF document text
- http://24x7taazasamachar.com/assets/ckfinder/core/connector/php/uploads/files/98092916157.pdfIn PDF document text
- http://www.cenlajobinator.com/siteuploads/editorimg/file/61048646847.pdfIn PDF document text
- https://mumegram.com/userfiles/file/90923669108.pdfIn PDF document text
- https://euinsuti.uniluxgym.ro/app/webroot/files/userfiles/files/65608937906.pdfIn PDF document text
- http://www.radanhorse.com/resource/files/85146827305.pdfIn PDF document text
- http://montagnobozzone.it/userfiles/files/39538180995.pdfIn PDF document text
- https://bravo-hk.com/userfiles/file/gowovofimadetoj.pdfIn PDF document text
- https://vietrocknet.org/app/webroot/img/files/28939637415.pdfIn PDF document text
- https://jensbrode.de/files/file/rufivemagenov.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=find+a+friend+androidPDF 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_off0000d673.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD673 | 18840 bytes |
SHA-256: 0e57031bf657173ed1ed85c6db5ded2f15bf9721769c6a8a3773505ff8805ba7 |
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font_01_sfnt_off00010794.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10794 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011fab.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11FAB | 10012 bytes |
SHA-256: 61b55eb1901f876e1d4429ef7f8152e6de6d534f845da428dc14c68efa835223 |
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