Malicious PDF — malware analysis report

Static analysis result for SHA-256 441cb8c4bfcc5557…

MALICIOUS

PDF

312.2 KB Created: 2022-04-16 00:00:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-06
MD5: 94e473ca080132622c6ffb6f2b145407 SHA-1: 812bf0a61df1fde6b971727e06cc253756682c76 SHA-256: 441cb8c4bfcc5557a1024269da1c562bd8c59e82432c5fbf3df9073d62c6b991
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6043

Heuristics 6

  • 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.
  • 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://fecuq.co.za/XSRYdR1H?utm_term=poetry+chapbook+format PDF link annotation
    • https://yapluka-services.fr/userfiles/file/wanev.pdfIn PDF document text
    • http://myesen.life/userfiles/file/radijojixo.pdfIn PDF document text
    • https://judorobizud.weebly.com/uploads/1/3/4/4/134455398/5042959.pdfIn PDF document text
    • http://newpacksy.com/admin/kcfinder/upload/files/fomema.pdfIn PDF document text
    • http://triatlonbizuterie.cz/sites/default/files/file/dinusipomibe.pdfIn PDF document text
    • https://dusivasawomila.weebly.com/uploads/1/3/4/6/134660852/08bca.pdfIn PDF document text
    • https://webaruhaz.codefon.hu/js/ckfinder/userfiles/files/zotadufad.pdfIn PDF document text
    • http://toszegisuli.hu/userfiles/file/74066173089.pdfIn PDF document text
    • https://pakistanchristiancongress.org/userfiles/file/93327431936.pdfIn PDF document text
    • http://www.supair-lux.hu/ckfinder/userfiles/files/67288722185.pdfIn PDF document text
    • https://edusfera.pl/upload/file/94814734441.pdfIn PDF document text
    • https://bovimafeji.weebly.com/uploads/1/3/4/5/134598331/832305717d.pdfIn PDF document text
    • http://nccpindia.org/ckeditor/kcfinder/upload/files/liposovunofonuka.pdfIn PDF document text
    • http://cityclick.it/userfiles/files/31937838288.pdfIn PDF document text
    • https://tovepeluzon.weebly.com/uploads/1/3/4/3/134385389/2658401.pdfIn PDF document text
    • https://enilubricantvn.hoakhanh.vn/uploads/image/files/9947343464.pdfIn PDF document text
    • http://ambvetesopo.eu/userfiles/files/29570169776.pdfIn PDF document text
    • http://architettogherardi.eu/userfiles/files/gaxavef.pdfIn PDF document text
    • https://aporpeter.ro/userfiles/file/nobanu.pdfIn PDF document text
    • http://www.varnamonarradio.se/admin/kcfinder/upload/files/64942843794.pdfIn PDF document text
    • https://slavyansk.biz/userfiles/file/24599446781.pdfIn PDF document text
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1620074a39826c---pakanivapowose.pdfIn PDF document text
    • http://teplo76.ru/uploads/file/sapekupavudi.pdfIn PDF document text
    • https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/f3e2a6b172282676c6dbed93867594b4/jiberufozagetili.pdfIn PDF document text
    • https://jilarikogezinuv.weebly.com/uploads/1/3/0/9/130969280/2453208.pdfIn PDF document text
    • https://surogupidaxa.weebly.com/uploads/1/3/4/9/134901722/tidofaxiba.pdfIn PDF document text
    • http://niuwa6.com/userfiles/file/gazenokilesakojilavuvi.pdfIn PDF document text
    • https://xabatuvozinev.weebly.com/uploads/1/4/1/3/141354781/lusulebufunawudezas.pdfIn PDF document text
    • http://www.gpkoaee.ru/ckfinder/userfiles/files/75363019997.pdfIn PDF document text
    • http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/16254beab699b8---bunusomume.pdfIn PDF document text
    • https://febewizonobuwom.weebly.com/uploads/1/3/4/3/134311996/11bfa.pdfIn PDF document text
    • https://noxoxepos.weebly.com/uploads/1/4/1/3/141343056/zesijoxijan.pdfIn PDF document text
    • http://lauffer.com.br/app/webroot/js/kcfinder/upload/files/nefapato.pdfIn PDF document text
    • https://khogiaydantuonghanquoc.com/images/news/file/17061829767.pdfIn PDF document text
    • http://generaldistco.com/images/file/robuwaderoriwiwepikuleziw.pdfIn PDF document text
    • http://pk.mo/userfiles/file/mamun.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/16225e911c7dbb---46850313812.pdfIn PDF document text
    • http://9topia.com/js/kcfinder/upload/files/45675432119.pdfIn PDF document text
    • https://gitaxawisar.weebly.com/uploads/1/3/2/8/132814742/sutikewoporodudewux.pdfIn PDF document text
    • http://mestan.by/images/file/31928412594.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 extracted file (font_00_sfnt_off000471f3.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000471f3.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000471f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x471F3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00048a05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48A05 17952 bytes
SHA-256: 60969bb436f0bf34d0566845eaf56d6b061bbadb383a99676d97942e6cdc7c7d
font_02_sfnt_off0004b85b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B85B 10684 bytes
SHA-256: 7a6b03852c7f04995eb3c6d58b1861e29f84fdbd9e5755dd5793b5bc47fb6058