Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa88ab151b2490cd…

MALICIOUS

PDF

442.1 KB Created: 2022-03-26 12:28:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 18ce1eac284753cf8804c7c8b7eb633a SHA-1: 9c05f739ec89fb478ed1bba98d2307088ddebff5 SHA-256: aa88ab151b2490cdadce1ad5acc7efac566e2b3a5780c42dbebf40b22c6af67b
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6958

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lazav.co.za/XSRYdR1H?utm_term=archbishop+duncan+williams+prayer PDF link annotation
    • https://cheeselicious.net/UserFiles/file/12983392169.pdfIn PDF document text
    • http://hipscycle.simplywebeditor.com/site-uploads/78228461827.pdfIn PDF document text
    • https://wfca-czech.cz/temp/userfiles/files/jifuzi.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16201c6d81b330---90565637241.pdfIn PDF document text
    • http://jimandmillies.com/newerac2c/userfiles/file/46420301442.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/79576897077.pdfIn PDF document text
    • https://unique.global/wp-content/plugins/super-forms/uploads/php/files/2687adb2f3ece4166ad50c6449308317/49516288418.pdfIn PDF document text
    • http://mybooksite.net/kcfinder/files/peluxalomawulem.pdfIn PDF document text
    • http://biiww.com/upfiles/file/10338685952.pdfIn PDF document text
    • https://1992.centrumnet.hu/UserFiles/www.1992.centrumnet.hu/File/retizupol.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/06f2b9c776b733ec2017475c5216628d/zufodipemoronatuvumokixi.pdfIn PDF document text
    • http://saraco.kz/public/uploads/files/21388525001.pdfIn PDF document text
    • http://chinahongji.com/d/files/96431225048.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_off00066ee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66EE2 22756 bytes
SHA-256: eb97e8347200504549ee4b44fac6f7f5cc04c98b42973d7d43b768b0e6fe42ba
font_01_sfnt_off0006aaa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AAA0 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0006c1c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C1C0 11104 bytes
SHA-256: db1a7e2a75aaac4bd9f43ba14a02d8567f913753486dad026697bbf5b4941f59