MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://irlanc.ru/uplcv?utm_term=engineering+physics+practical+1st+semester PDF link annotation
- http://garystrike.com/clients/3/30/301ae0ed988f9237e4cb8f8c41f6cb36/File/goxufari.pdfIn PDF document text
- http://pozitron-s.ru/userfiles/file/wuduvefujuv.pdfIn PDF document text
- http://www.asslar.de/downloads/33886596873.pdfIn PDF document text
- https://tenfci.org/userfiles/file/sufukusosavebofiku.pdfIn PDF document text
- http://happyhanool.com/ckupload/files/zepawarew.pdfIn PDF document text
- https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c67e2dbe3c1---kegadubakirinopixovi.pdfIn PDF document text
- http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b183f1b5fb3---4234118278.pdfIn PDF document text
- https://benjamindreyer.com/wp-content/plugins/super-forms/uploads/php/files/fa0f5b9fe254596c4efdfad681a753b1/15972287126.pdfIn PDF document text
- http://lyjclinic.com/ckupload/files/jojefinitevunuwarolopani.pdfIn PDF document text
- http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/nbm7rtn2hmjge832kbk6ivp621/91354841997.pdfIn PDF document text
- https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/021a4c7c5600c85580512be03e6320c4/fukanowubana.pdfIn PDF document text
- http://koslita.eu/ckfinder/userfiles/files/roganososovivoxuk.pdfIn PDF document text
- https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acbbf90b00a---temuzisafuvazul.pdfIn PDF document text
- http://bensonlandscape.com/editorData/file/12722862078.pdfIn PDF document text
- https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/5a8ca6da1a2043fdb71ab3bbeac48cc1/11705680765.pdfIn PDF document text
- https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/n5gaqf98re6pr0ids7ccbff0f0/70956823809.pdfIn PDF document text
- https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/57dfe1c4cd328920063a11cad9e76a16/didazurebedinox.pdfIn PDF document text
- http://akcjonariusz.com/UserFiles/file/zazujotaxosinakugekulatun.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000df61.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF61 | 5456 bytes |
SHA-256: 0ec4537e8bafbddff836b2d8f7ea88c5dd800a40df832e54ad0b780ffe24236a |
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font_01_sfnt_off0000f1e4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF1E4 | 10516 bytes |
SHA-256: 8af3a9ffd308c20c274e574d1504e459cbb07cedd010a0eba0fa0cf74bc8679e |
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