PDF malware analysis — malicious · d3e66631895edce4

MALICIOUS

PDF

360.3 KB Created: 2022-04-10 16:56:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21

MD5: 32b0d71db1655c978a85ac97b3a7593f SHA-1: a983b677569c0edc1c941cf14981988d7e7f7043 SHA-256: d3e66631895edce4d8b32a473d863a48429a505a81a507e655bcd9ac86b8db61

174 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.6318

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://wirut.co.za/XSRYdR1H?utm_term=numeros+ganhadores+de+free+lotto PDF link annotation
- https://sosnovgeo.ru/userfiles/file/zegabaxasujawabefuk.pdfIn PDF document text
- http://struna.bg/admin/kcfinder/upload/files/pisirixikal.pdfIn PDF document text
- http://inbjnews.com/data/cheditor/0603/files/31458011534.pdfIn PDF document text
- http://igs.compcierge-asia.com/ckfinder/userfiles/files/93002709844.pdfIn PDF document text
- https://risimapi.weebly.com/uploads/1/3/4/3/134321435/b1920.pdfIn PDF document text
- http://trust-law-firm.com/userfiles/file/20220220201846_1995221672.pdfIn PDF document text
- https://travelbook.kz/kcfinder/upload/files/49950041071.pdfIn PDF document text
- http://hoangminhsaigon.vn/@dmin/js/ckfinder/userfiles/files/mefadakivotab.pdfIn PDF document text
- http://hifitness.hu/userfiles/file/88726231943.pdfIn PDF document text
- http://akbarestate.com/survey/userfiles/files/lezegizokelibajow.pdfIn PDF document text
- https://ramazupefedaze.weebly.com/uploads/1/3/5/3/135336263/gopabadunuwuw-jajujire-janikoke.pdfIn PDF document text
- http://navicom.net.vn/ckeditor/kcfinder/upload/files/32127150353.pdfIn PDF document text
- http://www.julietlandau.com/fckeditor/userfiles/file/mamobuga.pdfIn PDF document text
- https://womukedegaz.weebly.com/uploads/1/4/1/2/141250560/teragudosoton.pdfIn PDF document text
- https://filajusarapobu.weebly.com/uploads/1/3/4/7/134761194/nebov_wovaza_vizoruzekige.pdfIn PDF document text
- https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/162374f66e0a7c---renijizenipipasipifeza.pdfIn PDF document text
- https://majorsagilekvaros.hu/uploads/file/dujatexasu.pdfIn PDF document text
- https://riminabda.sk/userfiles/file/sifigozi.pdfIn PDF document text
- http://slmj8.com/data/userfiles/files/xokelizadupewejumun.pdfIn PDF document text
- http://sd.martabemitrasosial.com/editor/files/70849805309.pdfIn PDF document text
- https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/668d20200a9af59c62748b44fdd93e12/ketap.pdfIn PDF document text
- http://iwakuniyumiya.com/js/kcfinder/upload/files/rupadufixezezugudupibekal.pdfIn PDF document text
- https://gamma-electronics-eg.com/userfiles/files/7665856148.pdfIn PDF document text
- https://atlaskvartir.ua/data/uploads/files/xunedorezi.pdfIn PDF document text
- https://stl-log.com/htdocs/cljr/data/files/6342080383.pdfIn PDF document text
- https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/1620cf2ef80a5a---87675135675.pdfIn PDF document text
- https://shih-tzu.ro/files/file/41749035714.pdfIn PDF document text
- http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/162100a438ac27---69776172301.pdfIn PDF document text
- http://joltiy.ru/uploads/files/pufejekavunapenile.pdfIn PDF document text
- https://mail.conepe.org.br/public/ckeditor/kcfinder/upload/files/jowiwu.pdfIn PDF document text
- http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/1623552b5e956b---17248964680.pdfIn PDF document text
- https://eyetracking.pl/userfiles/file/solurusewitumejan.pdfIn PDF document text
- https://larigagip.weebly.com/uploads/1/3/4/8/134887586/ditifanaw.pdfIn PDF document text
- https://supratrend.hu/images/fck/files/75896390724.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_off00051bc0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x51BC0	18224 bytes
SHA-256: `a9969f777298269515ea1cc0de49e0b321fd581b8d4b13f35d1098954dd713af`
`font_01_sfnt_off00054ad3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x54AD3	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off000562e4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x562E4	16336 bytes
SHA-256: `adf38969d40f501586e0caf93d33991e243baeeecfe575c4831cdbf64b7044fa`
`font_03_sfnt_off000578e7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x578E7	10784 bytes
SHA-256: `4c95f9b42fba8d3225cb2659ed9c4b496e99ef03d05c18fb59d0498c4a7765b1`

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