Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa85e474d9b96ca5…

MALICIOUS

PDF

293.7 KB Created: 2022-01-10 11:34:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-07
MD5: f0a9df861fea3d0aa7a03902e4a8ddb4 SHA-1: 0481a1fc8bf93482bb3d1d6789796b2d6794252c SHA-256: aa85e474d9b96ca50c4f3080f19364c2c078b5884375fff18c8d309baf59cbdc
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7003

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 http://heorungminhphat.com/luutru/files/donamawukugujijajimimuze.pdf In PDF document text
    • https://epiphanych.com/images/file/guwaxenalituxokezini.pdfIn PDF document text
    • https://chrmglobal.com/userfiles/file/pukewejajivaxezig.pdfIn PDF document text
    • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/kmdob6leup0eu2vfu7qp6stcqe/kapilu.pdfIn PDF document text
    • http://bbhshipyard.com/userfiles/file/54312334623.pdfIn PDF document text
    • https://frischgeschluepft.de/kcfinder/upload/files/zumipoperovekupuxis.pdfIn PDF document text
    • http://safedoorsystems.com/cmsimages/file/pabebuz.pdfIn PDF document text
    • http://gemculture.com/userfiles/file/5699657385.pdfIn PDF document text
    • http://insuralead.com/userfiles/file/debirega.pdfIn PDF document text
    • https://penzehir.com/dorceiys/ckfinder/userfiles/files/sexugonaxaxufitexudini.pdfIn PDF document text
    • https://parc-hotel.info/file/88625820163.pdfIn PDF document text
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161aea96c85eb2---vitonidijimetawifojebopo.pdfIn PDF document text
    • http://www.communityheroesproject.org/wp-content/plugins/formcraft/file-upload/server/content/files/161aa50d9e4d3d---24222605561.pdfIn PDF document text
    • http://saldusjauniesiem.lv/login/kcfinder/upload/files/15171364812.pdfIn PDF document text
    • https://branchennachweis.eu/userfiles/file/numusil.pdfIn PDF document text
    • https://ngusacdon.com/upload/files/77253602259.pdfIn PDF document text
    • https://dafelia.com/files/60849202277.pdfIn PDF document text
    • https://vmgeducationtrust.org/home/vmgedu/public_html/public/userfiles/file/42521861333.pdfIn PDF document text
    • http://horizonpestservices.com/userfile/maxabi.pdfIn PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/rcbsi7riat79v1pqtc85kfefbt/78272985622.pdfIn PDF document text
    • http://agriturismolescuderie.eu/userfiles/files/55968470268.pdfIn PDF document text
    • http://sensi-leszno.pl/userfiles/file/lapegunuputijotenarozu.pdfIn PDF document text
    • http://bibrka-school.org.ua/ckfinder/userfiles/files/88594083964.pdfIn PDF document text
    • http://cyclad.org/UserFiles/file/47279728716.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/TSvcnjQ06Jg/uplcv?utm_term=template+html5+css3+responsive+freePDF 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_off00042803.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42803 18196 bytes
SHA-256: 4991543078fcc6dc4de8f5bf20a6671c81ce1d04dd610e85943d41bca65de9a1
font_01_sfnt_off00045763.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45763 11080 bytes
SHA-256: b4d6b9111f838d4a3bfb70cb2e0c012fb618c8ad688e60100970e6905def2abc
font_02_sfnt_off00047113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47113 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336