MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded URLs, many of which point to disposable hosting or compromised CMS upload directories, indicative of a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. The presence of multiple distinct hosts and the use of 'utm_term' parameters suggest an attempt to obscure the final destination and potentially leverage SEO tactics.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
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://diphong.com/uploads/17635505185.pdf In PDF document text
- http://tumakuruvoice.com/tumkurvoice/ckeditor/ckfinder/userfiles/files/latofimoveru.pdfIn PDF document text
- https://markiza-trade.ru/admin/ckfinder/userfiles/files/kanupegulom.pdfIn PDF document text
- http://sjzhtchem.com/upload/files/10016588603.pdfIn PDF document text
- http://mobiliteit.nu/files/jefagidovalipabadof.pdfIn PDF document text
- http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/161312c8de6392---vutojegevigivum.pdfIn PDF document text
- http://www.maderas-navarro.com/ckfinder/userfiles/files/wisudasolibit.pdfIn PDF document text
- http://theemasternetworker.com/ckfinder/userfiles/files/28146500857.pdfIn PDF document text
- https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/dc66de708e23304b65a6b590b9214093/jukovado.pdfIn PDF document text
- https://frigosztufi.ro/ckfinder/userfiles/files/47963700359.pdfIn PDF document text
- https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/867ed2c5b76edf4b30b05dd7b8d12218/21643315042.pdfIn PDF document text
- http://werkschoenenverkoop.nl/images/docman/files/zitezesuretexowagori.pdfIn PDF document text
- http://sungwoo-n.com/userfiles/file/xifefezikijawuzuvagadeke.pdfIn PDF document text
- https://xn--80aaa1arbfjoe3bzh.xn--p1ai/data/files/xexopuko.pdfIn PDF document text
- http://aranysolyomfeszke.hu/editor_up/fobizamegu.pdfIn PDF document text
- http://wolfroccatiassociati.it/userfiles/files/82066327467.pdfIn PDF document text
- http://tlumacz-francuskiego.pl/userfiles/file/59162440810.pdfIn PDF document text
- http://annassteen.com/ckfinder/userfiles/files/solezezu.pdfIn PDF document text
- https://iagclaims.endataclaims.com/ModCoreFilesUploaded/file/80675834480.pdfIn PDF document text
- http://ceresasrl.it/userfiles/files/ranogegajoru.pdfIn PDF document text
- http://grandviewcommunity.com/userimages/68000477351.pdfIn PDF document text
- http://polaryachts.com/res/wysiwyg/file/rigoriris.pdfIn PDF document text
- http://thietbikhachsanvinhhung1.com/upload/files/kewazejegufatupeleti.pdfIn PDF document text
- http://sujitonweb.com/userfiles/files/nagolo.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=stylus+pen+app+for+androidPDF 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_off0000c677.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC677 | 10780 bytes |
SHA-256: 6f511bba0a1404c19196a20d182f1737bd6c59cbcd95367c0e1cfdb0ffd43821 |
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font_01_sfnt_off0000df6f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF6F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f781.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF781 | 17272 bytes |
SHA-256: b3b81ccee656c47674d854ee6b156128afe405808e3f3fef40ffa546b47c71f7 |
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