Malicious PDF — malware analysis report

Static analysis result for SHA-256 550f43e24cfe3148…

MALICIOUS

PDF

286.9 KB Created: 2022-04-07 23:16:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-04
MD5: 57998a9b72d7749f0b5be78b8437abe3 SHA-1: c4c5d1d882c4884403ad876f2e07d220ad254840 SHA-256: 550f43e24cfe3148cde4fe29fa0826189d4803bf45aa8f40693066422c5483a0
191 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6609

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.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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://gagakulusete.weebly.com/uploads/1/3/5/3/135326625/5953738.pdf In PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/ecbmv1ptnb335795ueafgoupfd/21989598713.pdfIn PDF document text
    • https://koxipaburejoxow.weebly.com/uploads/1/3/2/6/132681725/79152.pdfIn PDF document text
    • https://pawirijox.weebly.com/uploads/1/3/4/7/134701745/741d2.pdfIn PDF document text
    • https://bugusurev.weebly.com/uploads/1/3/4/6/134615575/juzeposim-wizusesusaxaja-zagozu-nobej.pdfIn PDF document text
    • http://studiolegaletrotta.eu/userfiles/files/seronovibuxinewexiwid.pdfIn PDF document text
    • http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16218d059aaaae---83100580220.pdfIn PDF document text
    • https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/2ad7e4bea5222aa57e04d492efc5a645/93325233176.pdfIn PDF document text
    • http://ap116.ru/userfiles/file/lewoxudirerapef.pdfIn PDF document text
    • https://eslms.com/userfiles/file/korosorazekalorabikaw.pdfIn PDF document text
    • http://indago-rovigo.it/userfiles/files/21298293695.pdfIn PDF document text
    • https://advantagelic.com/singhania/downloads/file/bixaxi.pdfIn PDF document text
    • https://gutinevar.weebly.com/uploads/1/3/4/6/134611255/9240550.pdfIn PDF document text
    • http://daearesort.com/FileData/ckfinder/files/20220312_E540DD66C0BFB682.pdfIn PDF document text
    • https://lufaranari.weebly.com/uploads/1/3/4/6/134689474/60f84d621f3.pdfIn PDF document text
    • http://hasanmasat.com/ckfinder/userfiles/files/nejilaxalejenuxilatotere.pdfIn PDF document text
    • https://lovunekigip.weebly.com/uploads/1/3/4/6/134685916/bolalivonugomazuxo.pdfIn PDF document text
    • https://ppic.net-line.pl/www/js/kcfinder/upload/files/98132115704.pdfIn PDF document text
    • https://www.econiwas.com/econiwascontrol/bower_components/ckeditor/kcfinder/upload/files/dizigusepolake.pdfIn PDF document text
    • http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/1622da9f90a408---6232255862.pdfIn PDF document text
    • https://www.paseppe.gr/ckfinder/userfiles/files/takotina.pdfIn PDF document text
    • http://forsheda.se/admin/kcfinder/upload/files/jolejokoxalum.pdfIn PDF document text
    • http://prtourusa.com/FileData/ckfinder/files/20220301_810255A08DDA593B.pdfIn PDF document text
    • http://divelife.kz/files/file/6498838498.pdfIn PDF document text
    • http://powerfalcon.net/uppic/files/66717214462.pdfIn PDF document text
    • https://naketutetan.weebly.com/uploads/1/3/4/6/134660231/tugisozorewa.pdfIn PDF document text
    • http://imhyuk.com/imhyukeditor/userfile/file/56296404179.pdfIn PDF document text
    • https://dufofisejufosu.weebly.com/uploads/1/3/4/8/134875198/bizawivejakotem.pdfIn PDF document text
    • https://colod.co.za/XSRYdR1H?utm_term=runescape+3+raids+guidePDF link annotation
    • http://studiobaliva.eu/userfiles/files/manegegod.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_off0003f388.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003f388.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003f388.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F388 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00040b9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40B9A 19016 bytes
SHA-256: 0806e0bda311786aaf212921631eae403a574e0120cf4da6124ff67b4d18050a
font_02_sfnt_off00043d71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43D71 10740 bytes
SHA-256: 45f79a5f0dc8ce6f6f6844f23a2c7c9a4d5baf17b95e241d89d129dfa4cc7822
font_03_sfnt_off00045606.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45606 16336 bytes
SHA-256: adf38969d40f501586e0caf93d33991e243baeeecfe575c4831cdbf64b7044fa