MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, indicating a link farm designed for redirection. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. The primary attack pattern involves luring users through a malicious attachment to a network of redirecting URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 6
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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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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://dongciao.com/uploads/files/202109090043202462.pdf In PDF document text
- http://imobilestore.de/userfiles/file/65092530557.pdfIn PDF document text
- https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/c98f26c3bebaa043caa523afe9961e13/mufatekigimulawewa.pdfIn PDF document text
- https://dubigroup.com/admin/fckeditor/editor/filemanager/connectors/upload/file/24236654202.pdfIn PDF document text
- https://ashasuchikala.com/ckfinder/userfiles/files/bugomidorex.pdfIn PDF document text
- http://medi-sen.com/files/files/87878868792.pdfIn PDF document text
- https://mertlakustika.cz/images/pages/file/4989061935.pdfIn PDF document text
- http://ambiance-cinema.fr/wp-content/plugins/super-forms/uploads/php/files/a4c169bdf144f6463962f99819447d7c/82844477867.pdfIn PDF document text
- http://skkouty.cz/ckfinder/userfiles/files/62232470302.pdfIn PDF document text
- http://precisionsurgicalworks.com/alpha/ckfinder/userfiles/files/33418453361.pdfIn PDF document text
- http://hiniceshine.com/upload/53786099045.pdfIn PDF document text
- http://immobilieninvestors.de/userfiles/file/21874926470.pdfIn PDF document text
- http://baloneacessorios.com/_upload/file///16823663948.pdfIn PDF document text
- https://himalmanpower.com/ckfinder/userfiles/files/lilofepuxarupedipetoruzul.pdfIn PDF document text
- http://aunay-sous-auneau.fr/ckfinder/userfiles/files/6868122806.pdfIn PDF document text
- https://isleo.com/i_photos/file/kupavofetepuxafez.pdfIn PDF document text
- http://train-in-japan.com/images/blog/file/rajilutidunulowa.pdfIn PDF document text
- http://infinity-pro.ru/userfiles/file/jupimifinib.pdfIn PDF document text
- https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613283fb6d424---fivuwavoguvedazejaxusikef.pdfIn PDF document text
- http://gzmzwl.com/Uploadfiles/files/nisoved.pdfIn PDF document text
- http://thibidi.vinadesign.info/uploads/images/files/6537277302.pdfIn PDF document text
- https://jahanchart.ir/data/files/file/10049380438.pdfIn PDF document text
- https://dalnoboy.com/data/filestorage/upload/files/xepimo.pdfIn PDF document text
- http://halongwave.com/userfiles/file/80257388643.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=new+sex+game+apkPDF 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_off0000d955.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD955 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f167.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF167 | 18212 bytes |
SHA-256: a570b5eaf14bf6cb1dd91210d925ee0fa70cc2c6dbf2dc202aa62e33d8924a2e |
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font_02_sfnt_off0001200b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1200B | 10292 bytes |
SHA-256: b00edc0be4a179827498a228d925f4ddf85199abc1b2c2961e121cf6e058a23e |
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