PDF malware analysis — malicious · 72b35f1028d85624

MALICIOUS

PDF

391.2 KB Created: 2022-04-12 03:10:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28

MD5: 276cece5e65d13730d78bc840f0dce6c SHA-1: 042a47fbf2eb9ab1ac9bb6dc3fe6c90c907ed3a6 SHA-256: 72b35f1028d8562484ca16bb1f67552001624d78da40f1239697482ae2a44a72

174 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.5536

Heuristics 7

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK

PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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 https://sunuf.co.za/XSRYdR1H?utm_term=geografia+de+mexico+y+del+mundo PDF link annotation
- http://bonfiremadigan.com/uploads/fckeditor/file/3931080064.pdfIn PDF document text
- http://www.supair-lux.hu/ckfinder/userfiles/files/37115161880.pdfIn PDF document text
- https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621bdc45051b1---tetederelisegurobibivuwab.pdfIn PDF document text
- http://kammatrans.com/userfiles/files/nizifu.pdfIn PDF document text
- http://operahazyborlovagok.hu/browser/files/14687043168.pdfIn PDF document text
- https://palcev.ru/userfiles/file/79642145329.pdfIn PDF document text
- https://likunemotiro.weebly.com/uploads/1/3/5/2/135299998/213567f5d73.pdfIn PDF document text
- http://valleytechltd.com/assets/ckeditor/kcfinder/upload/files/75783012369.pdfIn PDF document text
- http://stopguepes72.fr/userfiles/file/11004397296.pdfIn PDF document text
- https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/q001ngbuffjirl9qc0sog5fu4m/78842370867.pdfIn PDF document text
- http://boden.boj.se/uploads/userfiles/files/76810976994.pdfIn PDF document text
- https://rujikanonige.weebly.com/uploads/1/3/1/8/131872107/1593857.pdfIn PDF document text
- https://kefuvavubuxega.weebly.com/uploads/1/3/1/1/131164002/8496592.pdfIn PDF document text
- http://aedjtj.pretty-match.com/upload/files/28820063485.pdfIn PDF document text
- http://chi-kara.net/Upload/files/tisuxatadeten.pdfIn PDF document text
- http://forensique.ch/app/webroot/kcfinder/upload/files/47662015470.pdfIn PDF document text
- https://fowanexi.weebly.com/uploads/1/3/4/6/134648222/7871424.pdfIn PDF document text
- http://vuonlan.vn/data/upload/files/laganumak.pdfIn PDF document text
- https://whiteplacard.com/UserFiles/file/26962142782.pdfIn PDF document text
- https://static.yulava.es/js/libraries/ckeditor/kcfinder/upload/files/50146584232.pdfIn PDF document text
- https://gionggiacam.com/ckfinder/userfiles/files/63166922044.pdfIn PDF document text
- https://habibitours.com/ckfinder/userfiles/files/nedazi.pdfIn PDF document text
- http://pbwi.com.pl/admin/kcfinder/upload/files/13293899420.pdfIn PDF document text
- https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1622c0ee5bbf58---18032272252.pdfIn PDF document text
- https://makiriaszto.hu/ckfinder/userfiles/files/pifebuponetope.pdfIn PDF document text
- https://verner.lt/images/files/voweronodejatotit.pdfIn PDF document text
- https://kopejupamuv.weebly.com/uploads/1/4/1/3/141318798/6c6da537.pdfIn PDF document text
- https://nawawedivoxoni.weebly.com/uploads/1/3/4/7/134719505/sobaber.pdfIn PDF document text
- https://xesawamerubipox.weebly.com/uploads/1/3/4/6/134629950/wefenado.pdfIn PDF document text
- https://ngonluathan.vn/images/ckeditor/files/88518836730.pdfIn PDF document text
- http://jrecchina.com/ckeditor/ckfinder/userfiles/files/mejunusujeratuzaf.pdfIn PDF document text
- https://zedebofewel.weebly.com/uploads/1/3/4/5/134594015/gedamulojuwigitakago.pdfIn PDF document text
- http://baobianhkhang.com/upload/files/78688491272.pdfIn PDF document text
- http://softwarefactory.nl/images/file/xaxazovukof.pdfIn PDF document text
- https://fezizijopugasu.weebly.com/uploads/1/3/4/8/134850826/negezabi_wetewesido.pdfIn PDF document text
- http://tiendanatacion.com/noticias/files/42202114349.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00058ef0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x58EF0	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0005a707.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5A707	10908 bytes
SHA-256: `18fb4b60d1b83040f18f3633dd5a75700aac7deee6e7deb323eb2ca030161613`
`font_02_sfnt_off0005c00f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5C00F	22284 bytes
SHA-256: `1339c6d0dbf4c90456e186cd758192d6e5312f331f44ab273511526743883249`
`font_03_sfnt_off0005f77c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F77C	16064 bytes
SHA-256: `f76835efc0f70b52b211676925d3c3919e6952eec6cd10f320d1ab287c5fabf2`

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