MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple external websites, some hosted on compromised CMS uploads. The embedded URLs and the nature of the heuristics strongly suggest a phishing or SEO poisoning attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
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://rosenstein.lu/userfiles/files/1234020299.pdf In PDF document text
- http://195exim.com/datas/files/36575463474.pdfIn PDF document text
- http://cateringkieuan.com/uploads/userfiles/file/kuwufukol.pdfIn PDF document text
- https://studybrilliant.online/app/webroot/img/userfiles/file/mepazu.pdfIn PDF document text
- http://myagreement.com/UserFiles/file/lojowevu.pdfIn PDF document text
- https://ssvacancy.com/ckfinder/userfiles/files/8999750960.pdfIn PDF document text
- https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/g635gs7fd6qsrh7v49jqdg86i0/vomodokoxakupo.pdfIn PDF document text
- https://mai-avto.ru/upload_files/file/99203743338.pdfIn PDF document text
- https://sudhirsachdevaclasses.com/ci/userfiles/files/padowazifubudonal.pdfIn PDF document text
- https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/16139bf82e185b---zubakabutisar.pdfIn PDF document text
- http://triatlonbizuterie.cz/sites/default/files/file/55022658606.pdfIn PDF document text
- http://vantaidongsaigon.com/uploads/files/67165527164.pdfIn PDF document text
- https://wisestudentz.com/userfiles/file/75233300947.pdfIn PDF document text
- http://www.laterveer-biesenbeek.nl/ckfinder/userfiles/files/93796845615.pdfIn PDF document text
- https://centaur.vri.cz/docs/files/dibixufopufesagegemub.pdfIn PDF document text
- http://allprintusa.com/admin/images/file/zeviwagifabisukakopak.pdfIn PDF document text
- http://ifaistos.reality.gr/~triantaf/images/file/77083314193.pdfIn PDF document text
- http://armiikrajowej36.pl/public/upload/ckfinder/userfiles/files/81903909546.pdfIn PDF document text
- http://hytechcommunications.com/userfiles/file/fejonasusolabexanat.pdfIn PDF document text
- https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/16137c775d102c---18840864575.pdfIn PDF document text
- http://evopizza.lt/ckfinder/userfiles/files/vewovalexivediru.pdfIn PDF document text
- https://lekkermooi.nl/userfiles/file/zozimuxetujefegal.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=how+to+rotate+my+phone+screenPDF 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_off0000b5de.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB5DE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000cdf0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCDF0 | 15736 bytes |
SHA-256: d0c52765185ca2adc4e8b52144d69663e8a474c4c4d6666d0aee2214219a8583 |
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font_02_sfnt_off0000f609.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF609 | 10692 bytes |
SHA-256: 3534b0eee99926d90e5dd19cefe158cc65d2d8775c529536e69d5bd6d3ac841b |
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