MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to disposable hosting or compromised CMS uploads, suggesting a link farm designed to redirect users. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, providing no direct user-facing content but likely serving as a vessel for these malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9969
Heuristics 6
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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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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://yarpaket.ru/userfiles/file/36913848678.pdf In PDF document text
- http://liavanhaeringen.nl/userfiles/files/97997798897.pdfIn PDF document text
- http://www.kizkulesikizogrenciyurdu.com/public/ckfinderuploads/files/suxupitazawolowijisamato.pdfIn PDF document text
- http://apexnepaltravel.com/userfiles/file/76463556542.pdfIn PDF document text
- http://www.oneworldkarate.com/fckeditorimages/userfiles/file/botebavizutavarisatenaso.pdfIn PDF document text
- https://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/n7365gbsvb5a6a8rblnvit1j9v/43146763835.pdfIn PDF document text
- https://morabia.fi/images/file/78804030302.pdfIn PDF document text
- https://noddy.nu/images/file/90479523755.pdfIn PDF document text
- https://travelsafeway.com/userfiles/file/28623579752.pdfIn PDF document text
- http://www.vishalsahni.com/public/ckfinder/userfiles/files/wovavetiwewagenapifimip.pdfIn PDF document text
- http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16098511fc2ab6---99548069974.pdfIn PDF document text
- https://alarrabnews.com/images/content/content/file/pejatonulivabu.pdfIn PDF document text
- http://wsp.pl/userfiles/file/supana.pdfIn PDF document text
- https://agenciaboom.com/wp-content/plugins/super-forms/uploads/php/files/bf9o6ddvln0hsvit0j2vmpoqj5/vituw.pdfIn PDF document text
- http://riversedgefm.com/files/file/vulixasojolofupuxinowaf.pdfIn PDF document text
- https://drticket.ir/basefile/drtiketcom/files/ximab.pdfIn PDF document text
- https://pet-fashion.ro/mm/file/17209365998.pdfIn PDF document text
- https://psychologgia.pl/Upload/file/tezid.pdfIn PDF document text
- http://botosani.ro/img/uploads/file/99485907788.pdfIn PDF document text
- http://przychodnia-felinskiego.pl/uploads/editor/file/bobigujaragokod.pdfIn PDF document text
- https://zevkotodoseme.com/upload/ckfinder/files/bupudex.pdfIn PDF document text
- https://etcbt.com/userfiles/file/31198235047.pdfIn PDF document text
- http://ventexevent.se/uploads/file/jojut.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=debussy+estampes+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://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_off00010adb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10ADB | 10552 bytes |
SHA-256: 9b06d54703e4690f46f1b0aa9f93f62715c851e94bd345d13984bccabff166e8 |
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font_01_sfnt_off000122cc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x122CC | 21052 bytes |
SHA-256: 1d2384021427d1399e31341709a4d11a67389d8c8a37f7747fc939e6f2d70ec3 |
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font_02_sfnt_off0001574c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1574C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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