Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8e50c659614d41…

MALICIOUS

PDF

620.0 KB Created: 2022-03-21 09:49:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: bae9b19bf2c32b867fe6bf424f02acf1 SHA-1: 5ce47533319ce0f35a8e767cdcafa864148cc0c3 SHA-256: aa8e50c659614d417bbd5343dc9c6ce21690a8f6a743da3cb6d8247cf292bb97
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3712

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://fecuq.co.za/XSRYdR1H?utm_term=ejercicios+de+cohesi%C3%B3n+textual+con+soluciones PDF link annotation
    • https://festivaldelmaridaje.com/sgi_userfiles/userfiles/files/rofujuvodagu.pdfIn PDF document text
    • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/730efa2d3a1e3c266ad945f9b37e561a/monexivujububufetixilufo.pdfIn PDF document text
    • http://liubeauty.com/luutru/files/votozotemeforawo.pdfIn PDF document text
    • http://sql110.com/pic/74706328812.pdfIn PDF document text
    • http://tetrafluoro.com/upload/files/40442465638.pdfIn PDF document text
    • http://mamolenasnc.it/userfiles/files/1156752798.pdfIn PDF document text
    • http://www.enjoyvaltellina.it/admin/ckfinder/userfiles/files/nuwofakugekavizolinuziz.pdfIn PDF document text
    • https://dianthusindustrial.com/resimler/files/pumixabedagunedunewulom.pdfIn PDF document text
    • https://radio-uman.com/kcfinder/upload/files/75568240579.pdfIn PDF document text
    • http://songdolandmarkcity.com/userfiles/file/wixujomudepokejux.pdfIn PDF document text
    • http://protectakoteasia.com/ckfinder/userfiles/files/tijud.pdfIn PDF document text
    • https://admin.gruppoperonirace.it/kcfinder/upload/files/15643779429.pdfIn PDF document text
    • http://www.rbn.org.np/public/admin/plugin/kcfinder/upload/files/68439966385.pdfIn PDF document text
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/16208441f62c6b---13858260055.pdfIn PDF document text
    • http://getem.eu/files/file/90696777480.pdfIn PDF document text
    • https://www.stnedu.com/ckfinder/upload/files/30829099434.pdfIn PDF document text
    • https://petroservice-eg.com/userfiles/file/serisufumonaji.pdfIn PDF document text
    • http://icloudcleaners.com/uploads/account/autoresponderfiles/wuxexixom.pdfIn PDF document text
    • http://cichanski.com/Upload/file/vusixulubifujet.pdfIn PDF document text
    • http://studioturina.com/userfiles/files/16436693406.pdfIn PDF document text
    • https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/d3103791445f7f90a38664571606f48f/7755005933.pdfIn PDF document text
    • http://tesorosdelayer.es/imgs/images/files/wafeluberetasodozar.pdfIn PDF document text
    • https://www.kindspring.org/inc/ckfinder/userfiles/files/bemifinebopoziganomof.pdfIn PDF document text
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/162140bc601da3---gozawe.pdfIn PDF document text
    • http://bagsh.itpd.mn/kcfinder/upload/files/vefapobuxemaxobe.pdfIn PDF document text
    • http://igigeothermal.jp/userfiles/file/93302248736.pdfIn PDF document text
    • http://tochalco.com/uploads/files/bakubon.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622f9877c8680---93251733336.pdfIn PDF document text
    • http://khaskhaan.mn/uploads/userfiles/files/57428605445.pdfIn PDF document text
    • http://diamond6ranch.com/userfiles/file/debelumenuvap.pdfIn PDF document text
    • https://duocvinhkim.com/userfiles/file/setoteva.pdfIn PDF document text
    • http://bf4.nim.ru/userfiles/files/78335558608.pdfIn PDF document text
    • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621f128dca6eb---45028628254.pdfIn PDF document text
    • http://hz-kontejnery.cz/ckfinder/userfiles/files/12646594239.pdfIn PDF document text
    • http://auto-ecole-carnot.communication-pro.fr/public/1218/contenu/file/15719885442.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 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_off000934be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x934BE 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00094bd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94BD9 22484 bytes
SHA-256: 9ec86364cad9ae94b51747542c127d74ec51bed0545139f3f0c9bc841bb495b3
font_02_sfnt_off0009840c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9840C 10920 bytes
SHA-256: f41f72a6c00f026a508e9a3abb958abc7b33f3cbdacd38842b7a5c789acaef13