MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to compromised CMS upload storage and disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of these links and the overall structure indicate an attempt to distribute malware or conduct phishing attacks.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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://smidgel.ru/uplcv?utm_term=how+to+edit+audio+in+android PDF link annotation
- http://happyland-nsk.net/ckfinder/userfiles/files/pobetebotomikukiwurimoles.pdfIn PDF document text
- http://mezon.jp/userfiles/file/47703571282.pdfIn PDF document text
- https://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/92f3a67fbd5c4fa88560569cec81357f/tabilonisa.pdfIn PDF document text
- https://lee-trading.tw/archive/upload/files/xapedosogavekikop.pdfIn PDF document text
- https://uzmanwebci.com/calisma2/files/uploads/nimowe.pdfIn PDF document text
- http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613a20405140d---gususubez.pdfIn PDF document text
- http://namdolove.com/FileData/ckfinder/files/20210908_23388CF1D2F2B035.pdfIn PDF document text
- http://studiopol.it/userfiles/files/840732660.pdfIn PDF document text
- https://ceccardolj.ro/userfiles/file/tanaja.pdfIn PDF document text
- http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16146d39f70a2e---6521457869.pdfIn PDF document text
- https://adium.ru/userfiles/file/ruduxuzosumuvaje.pdfIn PDF document text
- https://lawrenceyezersky.com/userfiles/file/11172561988.pdfIn PDF document text
- http://abwbaltimore.com/uploads/files/davefiguk.pdfIn PDF document text
- http://commsoft.nu/demo/ktb/wsmbilder/files/31060036236.pdfIn PDF document text
- http://cokhiminhhien.com/media/ftp/file/52786226293.pdfIn PDF document text
- http://como.gattinonimondodivacanze.it/themes/userfiles/files/xawagumomiruv.pdfIn PDF document text
- https://sadhankendra.org/erc/media/13838253790.pdfIn PDF document text
- http://szyuangang.com/UserFiles/file///10083975957.pdfIn PDF document text
- https://equalland.com/uploads/File/liginutexilexidiputejuja.pdfIn PDF document text
- http://kozelskadm.ru/files/uploads/files/duzijid.pdfIn PDF document text
- https://strechybenesov.cz/content/sifopezogulepedusikoru.pdfIn PDF document text
- http://parcroyale.hk/userfiles/rupetivinutuvovul.pdfIn PDF document text
- https://aynispirit.nl/userfiles/file/78157800297.pdfIn PDF document text
- 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_off0000df4b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF4B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f75d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF75D | 19428 bytes |
SHA-256: 889a8b93c33ce76732a0f6fa6f5d71164de79c66c0952e30bdb14a77e031b3b8 |
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font_02_sfnt_off000129bf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x129BF | 10204 bytes |
SHA-256: 1bcff7d6a9050ca0769dfb2b281ab9f70d34cf55b70db8c99fe09e94a4310a78 |
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