Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8f94e11a33bd8b…

MALICIOUS

PDF

440.3 KB Created: 2022-02-09 14:02:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: c7e475214cc71f1375f4b68e73ab531e SHA-1: 70399a38388c032f0ddb3108c78da8fffee0823b SHA-256: aa8f94e11a33bd8b63a4b5f82bbd58b0b2bdbaa4a4592dbac9f626ec38316b44
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7114

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://tevav.co.za/XSRYdR1H?utm_term=huawei+mate+10+pro+emui+9 PDF link annotation
    • http://zsdbiopharm.com/upload/files/guvuledekemabajud.pdfIn PDF document text
    • https://www.sdhbd.org/backend/web/kcfinder/upload/files/43932863815.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/16183278bea99b---bedigogarex.pdfIn PDF document text
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/161677ed5ad539---69455341812.pdfIn PDF document text
    • https://indiantiffin4me.com/nbloom/fckuploads/file/momalixarabovaduku.pdfIn PDF document text
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/161dbd3e5b70cc---55139288208.pdfIn PDF document text
    • http://tecs4.com/intranet/ckfinder/userfiles/files/75732691251.pdfIn PDF document text
    • http://sanraimundo.cl/dyn/uploads/file/33577165654.pdfIn PDF document text
    • https://atlas-consulting.ro/fckeditor/fisiere/file/nujizew.pdfIn PDF document text
    • http://gibisch.com/files/files/xujivijejapaditi.pdfIn PDF document text
    • http://kuhomania.ru/ckfinder/userfiles/files/31244091142.pdfIn PDF document text
    • https://998.geektic.com/geektic/files/lujuvukozebigodudibab.pdfIn PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16182d6d7cc66d---85307422690.pdfIn PDF document text
    • https://kitapkapla.com/upload/ckfinder/files/sazux.pdfIn PDF document text
    • http://kshp-company.ru/userfiles/file/91374017973.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_off00067280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67280 18652 bytes
SHA-256: c29067bc2d30434053c1bd261ad56c45f72bfbc01ec12e933de28059b03dba48
font_01_sfnt_off0006a393.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A393 10616 bytes
SHA-256: cce24a3b114c1bf0fc43a1d6f12888b3e9f2d2657143a055080d822e16d73545
font_02_sfnt_off0006bbe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BBE5 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9

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