MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is identified as malicious by ML classifiers and ClamAV, with critical heuristic firings indicating a PDF phishing trojan. It contains embedded JavaScript, which is often used to execute malicious actions or redirect users. The PDF also features a link farm pointing to multiple unknown URLs hosted on compromised CMS uploads, suggesting an attempt to obscure the final malicious destination and distribute payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
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://rufullthrottle.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fc94388217---zeneraditutanasukux.pdf In PDF document text
- http://tomei4x4.jp/js/upload/files/nugijedinafulimuzotef.pdfIn PDF document text
- http://www.hydro-tg.pro/upload/file/52265815789.pdfIn PDF document text
- http://dioceseofniranam.org/userfiles/file/3477161817.pdfIn PDF document text
- https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cc180a86d61---xebazawuzuvunez.pdfIn PDF document text
- https://menu2uplus.com/images/file/94228615569.pdfIn PDF document text
- https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ab4cad3f6f---kulolafikepimu.pdfIn PDF document text
- https://mimpishio2bet.net/contents/files/kilefalafosevomovit.pdfIn PDF document text
- https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160763d11cdb8e---pafesibajibere.pdfIn PDF document text
- http://zbraneklapka.cz/ckfinder/userfiles/files/karawadozekenepudo.pdfIn PDF document text
- http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/160922e482fd26---matalojugid.pdfIn PDF document text
- http://ural-resyrs.ru/data/file/96452442731.pdfIn PDF document text
- http://vhshf.de/File/magulabunufekewabexi.pdfIn PDF document text
- http://babyschultz.com/clients/72285/File/74554329544.pdfIn PDF document text
- http://life-worldwide.org/assets/uploads/files/kixunog.pdfIn PDF document text
- http://stlnsk.ru/uploads/file/43837090228.pdfIn PDF document text
- http://velo.hu/UserFiles//file/40228101823.pdfIn PDF document text
- http://alhouti.com/userfiles/file/10802079782.pdfIn PDF document text
- http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c67c336681c---76144437378.pdfIn PDF document text
- http://natproperty.com/userfiles/files/bimiku.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=spanish+syllable+worksheets+for+kindergartenPDF 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_off0000c7d9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC7D9 | 17304 bytes |
SHA-256: 4d9b364073afcbeb3cad5a4060ddc723e1a134a74933e9515443c23dd0422636 |
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font_01_sfnt_off0000f4de.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4DE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010cf5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10CF5 | 11284 bytes |
SHA-256: 91481394702755b214ab3b3150a6d531e9235e3dd6234336edcba95baf125abe |
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