MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a link farm pointing to multiple external domains, with several heuristics indicating a compromised CMS upload or disposable hosting. ClamAV and the ML classifier flagged this PDF as malicious, specifically as a phishing trojan. The presence of numerous external links suggests an attempt to redirect the user to malicious content or phishing pages.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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 http://rigdrilling.org/userfiles/file/9813130485.pdf In PDF document text
- http://jinyezi.cn/upload/48547317757.pdfIn PDF document text
- http://ranczowdolinie.com/files/33734621589.pdfIn PDF document text
- http://opuspoint.com/ckfinder/userfiles/files/46596522935.pdfIn PDF document text
- http://huonglonghotel.com/uploads/image/files/1644823359.pdfIn PDF document text
- https://bacsionline.net/userfiles/file/1748930100.pdfIn PDF document text
- https://gplacestracker.com/userfiles/file/6393594380.pdfIn PDF document text
- https://vayamcs.com/content_files/files/bifegolitusimu.pdfIn PDF document text
- https://szamitogep-szerviz-javitas.hu/ckfinder/userfiles/files/xifakenem.pdfIn PDF document text
- http://speednewslive24.com/assets/ckfinder/core/connector/php/uploads/files/91277028498.pdfIn PDF document text
- https://www.ocnistudio.cz/ckfinder/userfiles/files/5289242040.pdfIn PDF document text
- http://nhakhoauytinhaiphong.com/upload/files/67602438683.pdfIn PDF document text
- http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/1615eb0e976143---zopukafamuxokubinoxem.pdfIn PDF document text
- http://chipublichouse.com/ckfinder/userfiles/files/jakajebu.pdfIn PDF document text
- https://www.gryf-wet.pl/ckfinder/userfiles/files/17563084846.pdfIn PDF document text
- http://library.nesdb.go.th/ic/admin/ckfinder/userfiles/files/16094810745.pdfIn PDF document text
- https://brune-schmuckwerk.de/ckfinder/userfiles/files/dajavipatusob.pdfIn PDF document text
- http://www.mustwalge.ee/data/content/files/panoloragefejebig.pdfIn PDF document text
- https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/593b13d1869fd944c6070c7d83f9fb98/85745996785.pdfIn PDF document text
- http://bajajsports.com/userfiles/file/696586445.pdfIn PDF document text
- http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/f31d32da29e4e679553202fd8c18226e/musomi.pdfIn PDF document text
- http://gz-theoutfit.com/UploadFiles/FCKeditor/20210907115548.pdfIn PDF document text
- http://feedproxy.google.com/~r/Xvkpad/~3/1hHberoKktI/uplcv?utm_term=c2h2+lewis+structure+molecular+geometryPDF 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_off0000cdc1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCDC1 | 11024 bytes |
SHA-256: 01f446d1f7a4e96257555981b5bbf98875fa07750309f156adc7aa0ff86125a9 |
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font_01_sfnt_off0000e7a0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7A0 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000ffb2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFB2 | 17764 bytes |
SHA-256: 7d332b73b3c8e069acbd8ab96106485ac689a78bf8c63aa130c43f9025187d62 |
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