Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6efa49e0c04608d…

MALICIOUS

PDF

405.9 KB Created: 2022-02-25 10:45:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-17
MD5: 823e019f29f60dec251236cf3d82b0b2 SHA-1: dc5a2560b4253c092ebf5719ffa7230bf3ea079e SHA-256: b6efa49e0c04608dc5d56f8c1fd8e35d66504707caf7c8b755e0669f0ac8f7fc
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8218

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://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/4ss34od21hu8rdam6ojfaisq41/seniles.pdf In PDF document text
    • https://palcev.ru/userfiles/file/31141872870.pdfIn PDF document text
    • https://siemens-rozetki.ru/kcfinder/upload/files/82839935026.pdfIn PDF document text
    • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/161afc96feaf66---bowewudesotebe.pdfIn PDF document text
    • http://vitacanes.com/uploads/files/64434032031.pdfIn PDF document text
    • https://sassitalu-ratsakool.com/sites/default/files/file/6274365566.pdfIn PDF document text
    • http://lsmtrontractor.com/upfiles/file/20220125110725.pdfIn PDF document text
    • http://www.omniasubventio.sk/admin/ckeditor/kcfinder/upload/files/tefazube.pdfIn PDF document text
    • http://pol2-simf.ru/userfiles/file/tivosolatebawexi.pdfIn PDF document text
    • http://neza.cz/UserFiles/File/niwejelatesuna.pdfIn PDF document text
    • https://rosettes.it/userfiles/file/71822634420.pdfIn PDF document text
    • https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/1cc2ca094afb133764080f98223ae38a/jezonuxanoxukom.pdfIn PDF document text
    • https://austdoorcaocap.com/upload/files/20357459073.pdfIn PDF document text
    • http://architettodrabeni.it/userfiles/files/24271031278.pdfIn PDF document text
    • http://f-okinawa.com/img/tmp/file/38591494740.pdfIn PDF document text
    • https://pataniforum.com/admin/jquery/ckfinder/userfiles/files/vazimidufovurozewaze.pdfIn PDF document text
    • https://netlandschool.cl/files/84983389454.pdfIn PDF document text
    • https://marblo.com/app/webroot/img/files/61259879886.pdfIn PDF document text
    • http://servicedental.it/userfiles/files/bolizidalolu.pdfIn PDF document text
    • http://defendo.hu/admin/kcfinder/upload/files/mixanesabepigunaxomug.pdfIn PDF document text
    • http://worldofpacifiers.com/editor_uploads/system/files/fizarivex.pdfIn PDF document text
    • https://yubit.co.za/XSRYdR1H?utm_term=air+miles+app+for+androidPDF 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 extracted file (font_00_sfnt_off0005e77b.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005e77b.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005e77b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E77B 10540 bytes
SHA-256: f1dcf16a93a1412e78ccb8874acdbb964c0782365a87be9456bd11520e7fff8c
font_01_sfnt_off0005ff6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF6A 19104 bytes
SHA-256: 0f0c99f7aca19c2be1ccdb67914d766f4da69d0eb4959a3315d769c69516b80a
font_02_sfnt_off0006319e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6319E 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9