Malicious PDF — malware analysis report

Static analysis result for SHA-256 634f66f013a61385…

MALICIOUS

PDF

358.0 KB Created: 2022-04-10 04:50:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-28
MD5: 9191b01a4e0a11e4d7a6fb7809793734 SHA-1: 5fb62a313858f953cdda94e95da8ca1294b855c2 SHA-256: 634f66f013a61385326764474cc657964742b109525cb4b8ac9460111b69df68
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5565

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://poturipi.weebly.com/uploads/1/3/4/4/134459049/6124351d03037.pdf In PDF document text
    • http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1624c85d65556f---94752802521.pdfIn PDF document text
    • https://myphi.biz/nbloom/fckuploads/file/padukonumedegojaravuje.pdfIn PDF document text
    • http://incomingmakedonia.com/files/files/6736062295.pdfIn PDF document text
    • https://renuzazofijixi.weebly.com/uploads/1/3/4/8/134865573/divosuvanimotok.pdfIn PDF document text
    • http://thietbimaugiao.vn/Images_upload/files/28637451369.pdfIn PDF document text
    • https://tosikoneliwino.weebly.com/uploads/1/4/1/2/141249680/4632773.pdfIn PDF document text
    • https://zojojuti.weebly.com/uploads/1/4/1/2/141287829/reduv.pdfIn PDF document text
    • https://coopinproject.eu/ckfinder/userfiles/files/timilavezisujozorel.pdfIn PDF document text
    • https://xn--80aab4aif1bzi.xn--07-6kc3bf4angc2g.xn--p1ai/files/files/69711460712.pdfIn PDF document text
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/162492671755cc---jewakepetot.pdfIn PDF document text
    • https://powermailer.in/userfiles/file/rugusozazebesamuze.pdfIn PDF document text
    • https://nhatngudongkinh.phapluatvietnam.com/upload/ckupload/files/kemedixiz.pdfIn PDF document text
    • https://waxusebodik.weebly.com/uploads/1/3/4/5/134529962/cc8d26bc1f9.pdfIn PDF document text
    • https://chennothinterios.com/uploads/file/40133774547.pdfIn PDF document text
    • https://krygina40.ru/UserFiles/File/sijotabudenawimolit.pdfIn PDF document text
    • https://www.nutfruit.org/js/admin/ckeditor/plugins/kcfinder/upload/files/32636646824.pdfIn PDF document text
    • http://phantasos.org/userfiles/file/nilewonax.pdfIn PDF document text
    • http://szm.hu/userfiles/file/ponafadufokokokujigi.pdfIn PDF document text
    • http://rubensova16.cz/files/file/kobabod.pdfIn PDF document text
    • https://htapigroup3.com/contents/files/runadi.pdfIn PDF document text
    • https://www.terraton.com.my/ckfinder/userfiles/files/41447686705.pdfIn PDF document text
    • http://marasintl.com/public/ckfinderuploads/files/lowadu.pdfIn PDF document text
    • https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/da9984af0093451047ebd1d609f493e6/rolibagujuvudijalalosig.pdfIn PDF document text
    • https://babekezuxosonat.weebly.com/uploads/1/3/5/3/135327288/letevinizirinesivaw.pdfIn PDF document text
    • http://nawoo.net/userData/board/file/99914585363.pdfIn PDF document text
    • http://bc-nosingtasting.com/bestanden/files/47368876376.pdfIn PDF document text
    • https://wugepugozufov.weebly.com/uploads/1/3/4/7/134744675/nifuzugubad_mowukut_ronigixuzel_wevazerav.pdfIn PDF document text
    • http://odontoflash.eu/userfiles/files/15766716341.pdfIn PDF document text
    • http://www.chestheart.org/assets/ckeditor/kcfinder/upload/files/71217399804.pdfIn PDF document text
    • https://begatidevu.weebly.com/uploads/1/3/4/5/134596010/wigubi.pdfIn PDF document text
    • http://tourister.kr/userfiles/file/11364466254.pdfIn PDF document text
    • https://bluedomain.online/ckeditor/kcfinder/upload/files/81533621952.pdfIn PDF document text
    • http://kcntanduc.vn/img_duhoc/files/67779337005.pdfIn PDF document text
    • https://jfava.gemwareserp.com/userfiles/file/porenakinexegopufewodosax.pdfIn PDF document text
    • https://koworuvixoduto.weebly.com/uploads/1/3/4/3/134352933/a27c61fc391b6d5.pdfIn PDF document text
    • https://catbasailing.com/upload/fck/file/wutexonisifajavagaz.pdfIn PDF document text
    • https://kutenenoki.weebly.com/uploads/1/3/4/7/134704657/2419492.pdfIn PDF document text
    • https://luckysurface.itweald.com/uploads/files/6220b3360d917.pdfIn PDF document text
    • http://ayhancevik.com/images_upload/files/mekufivuxavuxe.pdfIn PDF document text
    • https://meesens.be/KrMee/Tekstverwerker/gogabiperatolupemoj.pdfIn PDF document text
    • https://cafij.co.za/XSRYdR1H?utm_term=plantilla+recibo+de+nomina+wordPDF 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 extracted file (font_00_sfnt_off00052366.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00052366.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00052366.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52366 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00053b78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53B78 20140 bytes
SHA-256: 943d0f5303346ed5c154b2dc9353f0282900fc6a8d8580d42b0e7aec16cbc5f1
font_02_sfnt_off00056f10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56F10 10592 bytes
SHA-256: ff4c2c545fc361addc51edbedfbb7b6581940205229d5cb05f0a1c5a083b492f