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 compromised websites or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution through these links. The presence of a compromised CMS upload link further supports the malicious nature of the file.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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://ketchas.ru/uplcv?utm_term=the+official+guide+to+the+toefl+test+fifth+edition+pdf PDF link annotation
- http://icaalliance.org/filespath/files/20210912134810.pdfIn PDF document text
- http://skontrolsengineering.com/file_media/file_image/file/19746473115.pdfIn PDF document text
- https://koncnc.com/genelresimler/file/2804097174.pdfIn PDF document text
- https://darshanam.com/ckfinder/userfiles/files/19006883035.pdfIn PDF document text
- http://www.bash.cl/media/file/nezojet.pdfIn PDF document text
- https://raljob.com/userfiles/file/93475503037.pdfIn PDF document text
- https://biblioteka-koneck.pl/ckfinder/userfiles/files/lovigugigorojub.pdfIn PDF document text
- http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/161321043c5cc1---kigaxomemufijotana.pdfIn PDF document text
- http://tamphuhiep.com/Images_upload/files/sujotewalonigajirupaxij.pdfIn PDF document text
- https://csodamalom.hu/files/files/lakivabifapusotela.pdfIn PDF document text
- http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613f8a191b8ec---93752370073.pdfIn PDF document text
- https://cahayaapi1.com/contents/files/supowawoverolevakigu.pdfIn PDF document text
- http://travel-door.com/userfiles/file/3000128860.pdfIn PDF document text
- http://aire-limpio.com/img/editor/file/zogemulijuzosuraw.pdfIn PDF document text
- http://bodegaadrover.com/userfiles/imagenes/6465179978.pdfIn PDF document text
- https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16143e80e7f0f6---vukibixufilu.pdfIn PDF document text
- http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16133525103168---kumakad.pdfIn PDF document text
- http://irinabailey.com/upload/files/31949981610.pdfIn PDF document text
- http://medrea.ru/upload/files/sowaru.pdfIn PDF document text
- https://sindicav.com.br/ckeditor/ckfinder/userfiles/files/nilegofugo.pdfIn PDF document text
- http://davidhammerstein.org/ckfinder/userfiles/files/xisub.pdfIn PDF document text
- https://goldfieldssanddrags.com.au/ckfinder/userfiles/files/34817258984.pdfIn PDF document text
- https://www.netcorp.hu/data/editorfile/rinowoteliruwikexojala.pdfIn 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://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_off0000be10.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBE10 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d622.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD622 | 18324 bytes |
SHA-256: 88b64a423f9cbc75cc2b142f58e2598fa1306d5dee8682e3bc09009bc4e638bf |
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font_02_sfnt_off0001060c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1060C | 10864 bytes |
SHA-256: a0799e44138cfacc733088887c7b9f7b68bb7e5c01c35199fb381f188d9ceeb7 |
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