PDF malware analysis — malicious · 4afbda34d8413112

MALICIOUS

PDF

78.2 KB Created: 2021-10-08 15:14:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06

MD5: ed519256af78e1204c72ab38e545c50e SHA-1: 062d21dda1450174c89788b6453fc966651a9668 SHA-256: 4afbda34d84131123c10a19342d41aeafc9ded79b38059e3d9af69900756fd1a

156 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9982

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF 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.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small 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.
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The 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.
Embedded URL info EMBEDDED_URL

One 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://thietbiantoanttk.com/uploads/files/xifepamerenedonobabogibuz.pdf In PDF document text
- http://agriturismoilnoceto.com/userfiles/files/81585073182.pdfIn PDF document text
- http://camelliafb.com/uploads/files/202109200842501396.pdfIn PDF document text
- https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/3587554ce2968f7dbd7c30bd1cdb15ed/tezuje.pdfIn PDF document text
- http://zeci.nl/im/image/zopabuvuxewenurikiteso.pdfIn PDF document text
- https://llibreriaha.com/img/events/file/94739851348.pdfIn PDF document text
- https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f1e7a8ede2---20607001873.pdfIn PDF document text
- https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615c34244413e---zowefivuxorekegikurewuf.pdfIn PDF document text
- http://gaudi.tw/upload/file/21580136978.pdfIn PDF document text
- http://ssaisarang.com/ckfinder/userfiles/files/wimutono.pdfIn PDF document text
- https://kimcert.org/E/file/21738765311.pdfIn PDF document text
- http://artospace.com/pics/file/94468497432.pdfIn PDF document text
- https://fallahi-sch.com/userfiles/file/76650017871.pdfIn PDF document text
- http://one9five.com/userfiles/files/94636135834.pdfIn PDF document text
- http://totoquynhhuong.com/upload/files/gumesobimakevezogup.pdfIn PDF document text
- https://beautyyaurient.com/editor_upload/file/69234219059.pdfIn PDF document text
- https://idealist.ro/userfiles/file/90272475842.pdfIn PDF document text
- http://studioingegneramato.com/userfiles/files/47853180152.pdfIn PDF document text
- http://ohadalegistrocbarter.com/ckeditor/uploads/files/vebewojijorimitiguxabow.pdfIn PDF document text
- http://855solution.com/htdocs/cljr/data/files/11384914009.pdfIn PDF document text
- https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/np8kiqjoki9lk1jcnmekpu19fv/78209379846.pdfIn PDF document text
- https://hunglivet.com/uploads/files/202109302148497052.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=dxf+format+specification+pdfPDF 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_off0000ccd7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCCD7	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000e4e9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE4E9	17632 bytes
SHA-256: `e94219a4f5fada225f984c98e78a42f28cd6a4b23bece2048d1b23f8dcb86525`
`font_02_sfnt_off00011237.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11237	10836 bytes
SHA-256: `e3dce0f0a470fecafe2071ecc4403b09a0cfec5cfd40924e4516fdffbc45e02c`

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