Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8ab28baba9acde…

MALICIOUS

PDF

460.7 KB Created: 2021-12-16 08:46:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 484ff86e986d18d1c541bd49b2d8bbc4 SHA-1: 6a0a20424ff72f9f194af5dbb20e063da145ae3d SHA-256: aa8ab28baba9acdedf399184976f871cbf113f525c9a00322a9bdbc766d41c46
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5023

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.
  • 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://newat.ru/wp-content/plugins/super-forms/uploads/php/files/be02fa8f32b10293a6745178b5a5af81/86849458397.pdf In PDF document text
    • https://peterdegendt.be/file/71546169235.pdfIn PDF document text
    • http://architettosbaffo.com/userfiles/files/fosixijibiz.pdfIn PDF document text
    • http://a899.net/userfiles/file/lefiralupewimumekifev.pdfIn PDF document text
    • http://woykoff.hu/upload/file/26709009336.pdfIn PDF document text
    • http://darelbachra.com/app/webroot/js/kcfinder/upload/files/12009081942.pdfIn PDF document text
    • https://sharmtocairo.com/userfiles/files/55260587110.pdfIn PDF document text
    • http://borneneskontor-landsforening.dk/userfiles/file/60413057063.pdfIn PDF document text
    • http://stellarp.com/userfiles/file/69276155507.pdfIn PDF document text
    • http://handmade.sdelaemlegko.ru/files/userfiles/files/47161953860.pdfIn PDF document text
    • http://kmimmigrationlaw.com/userfiles/file/57269059990.pdfIn PDF document text
    • http://ty-universe.com/image/files/20211127_182355.pdfIn PDF document text
    • http://ibconsulting.it/userfiles/files/kevitukuwojupozofonozej.pdfIn PDF document text
    • http://powercleanperu.com/cms_powerclean_2015/sgi_userfiles/userfiles/files/64815139456.pdfIn PDF document text
    • http://lorichphoto.com/pictures/file/24676079910.pdfIn PDF document text
    • https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/161b8bd5f83a5d---sopinexonarow.pdfIn PDF document text
    • http://innotec-industrie.be/userfiles/file/83633370182.pdfIn PDF document text
    • http://le383.com/uploads/files/kuwatawuvajidadof.pdfIn PDF document text
    • http://gatewayhotelbangkok.com/upfile_hotel/files/bixonuv.pdfIn PDF document text
    • http://thermcom.cz/userfiles/file/kerimetore.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/94505627421.pdfIn PDF document text
    • http://fandimnarodaku.cz/upload/file/vudafavavula.pdfIn PDF document text
    • https://espiber.cl/images/uploadedimages/file/lurazokuwuroriguna.pdfIn PDF document text
    • http://petrduchek.com/files/60751602514.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/RhDyTiV0TgQ/uplcv?utm_term=filipino+foods+caloriesPDF 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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0006c57a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C57A 10492 bytes
SHA-256: 3983c5ba1e4d0548416ad9a0589d53131c21dcc459f9552118e91706498a459e
font_01_sfnt_off0006dd61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD61 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0006f400.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F400 18444 bytes
SHA-256: 27ad191c724a7d765dda9223edabf6c802e1dcf471a5cb16f537fcf3c4a9b9b5