Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b9dcbdd7da2c59…

MALICIOUS

PDF

242.8 KB Created: 2022-02-28 20:52:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-02
MD5: d498b1f259923460a4bfcaae62b19c2a SHA-1: eb41870f3314cc70c71cc1bad0b98fca2792a149 SHA-256: 88b9dcbdd7da2c59aa5e0c75d25af4ab171e9fd126a027ad64cea481be928702
161 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7734

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 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://self-storage.sg/images/uploadedimages/file/naginasekovegeduxelu.pdf In PDF document text
    • http://rileyillustration.com/images/agency/files/39787112226.pdfIn PDF document text
    • https://marwaautorepair.com/nbloom/fckuploads/file/xabab.pdfIn PDF document text
    • http://centronegozi.com/public/70269558497.pdfIn PDF document text
    • http://architettoannalisatinelli.it/userfiles/files/vodexolurime.pdfIn PDF document text
    • https://www.yamanosake.com/js/kcfinder/upload/files/19045477657.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/9a7fdc3a10a46ff7e9b6a99997bdc2bb/kofelivawanezamuxu.pdfIn PDF document text
    • http://aktifimmo.lu/userfiles/files/14202514165.pdfIn PDF document text
    • http://hotelhillwaypark.com/app/webroot/js/kcfinder/upload/files/wipivafasunebuvi.pdfIn PDF document text
    • https://www.officinasapori.com/_admin/kcfinder/upload/files/63592457845.pdfIn PDF document text
    • https://fo-prefectures.com/pages/files/18958533879.pdfIn PDF document text
    • http://fantalife.nl/userfiles/file/ruzutevogabud.pdfIn PDF document text
    • http://firstcuwire.com/file_media/file_image/file/rujejer.pdfIn PDF document text
    • http://capmar.eu/userfiles/file/lujatixevagem.pdfIn PDF document text
    • http://vietsinphar.com/uploads/files/7485495394.pdfIn PDF document text
    • http://uveteknik.com/uploads/files/88874775562.pdfIn PDF document text
    • http://melodylavernebettencourt.com/media/file/kabugowigufonoxamanox.pdfIn PDF document text
    • https://karthikaspices.com/uploads/file/rodokez.pdfIn PDF document text
    • http://sperrincaravans.com/images/file/mupewobokalaguna.pdfIn PDF document text
    • http://test.xn--b1adbeobutb0arf.xn--p1ai/kcfinder/upload/files/4533548497.pdfIn PDF document text
    • http://auto-berles.oldalunk.hu/userimages/files/73382423611.pdfIn PDF document text
    • http://www.naraihillgolf.com/admin/userfiles/file/44982758327.pdfIn PDF document text
    • http://voltgroup.com.ua/assets/kcfinder/upload/files/34423468009.pdfIn PDF document text
    • http://bahiratpatil.com/kcfinder/upload/files/biputa.pdfIn PDF document text
    • http://tarotschule-stuttgart.de/sites/default/files/file/43616456657.pdfIn PDF document text
    • http://minhquoc.vn/ckfinder/userfiles/files/gixunob.pdfIn PDF document text
    • http://4998horo.gmmwireless.com/contents/files/bapamanonejozuvufas.pdfIn PDF document text
    • http://oks.urmon.uz/kcfinder/upload/files/nonaganituwiwas.pdfIn PDF document text
    • https://lazav.co.za/XSRYdR1H?utm_term=free+5x7+envelope+liner+templatePDF 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_off000358f1.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000358f1.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000358f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x358F1 18888 bytes
SHA-256: ddcd19d81e1a0ea6fa0805da301e2183a454b24c18f2392780c0885754a29b11
font_01_sfnt_off00038a4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38A4A 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0003a16a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A16A 10572 bytes
SHA-256: 0312875bed1f8fd088f47b76093694d6d0ad7936809b50cf13d204ca603479e5