Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6104f4fa0c56719…

MALICIOUS

PDF

231.3 KB Created: 2022-03-09 21:53:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-15
MD5: 677437c6ce788222d9ff486c690fac2d SHA-1: a63291bd5eb908e4ed1c5985c30642fffe1859f6 SHA-256: b6104f4fa0c56719ec66078134501ce2959bf182a0d94ea6fc2289c10f697288
246 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7784

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://akgdsgfly.pretty-match.com/upload/files/91999791301.pdf In PDF document text
    • http://psycare-spb.com/userfiles/file/9822093607.pdfIn PDF document text
    • http://panelko.hu/files/files/10787052033.pdfIn PDF document text
    • http://www.awakohchang.com/image/upload/File/evoxinawerotiloweviwa.pdfIn PDF document text
    • https://ric-sb.si/uploads/files/43478002760.pdfIn PDF document text
    • https://shipnhanh247.vn/asset/files/tugekiwewarerow.pdfIn PDF document text
    • http://norrlandet.se/userfiles/file/41037472022.pdfIn PDF document text
    • http://moonyart.ru/admin/ckeditor/kcfinder/upload/files/65727298118.pdfIn PDF document text
    • https://dreamscapes.ca/dream_scapes/userfiles/files/11456009002.pdfIn PDF document text
    • https://dragonexpressml.apnaconsultant.com/userfiles/files/5317921328.pdfIn PDF document text
    • http://gancza.pl/userfiles/file/tanofakoni.pdfIn PDF document text
    • https://divinehm.com/ckeditor/kcfinder/upload/files/zozawinugisufunenitakol.pdfIn PDF document text
    • http://gtlitalia.com/userfiles/files/gorigapaju.pdfIn PDF document text
    • http://apismorava.eu/docs/jifumimikilalujawutiwe.pdfIn PDF document text
    • http://www.krishnashouse.com/ckeditor/kcfinder/upload/files/dasimamabipu.pdfIn PDF document text
    • http://diagnosticaedilizia.com/userfiles/files/47048805785.pdfIn PDF document text
    • http://softtox.com/new/userfiles/file/jorewilolopamil.pdfIn PDF document text
    • http://okinawa-touch.com/app/webroot/js/kcfinder/upload/files/zidajulesekajasowu.pdfIn PDF document text
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/162076da8d2da2---74799919577.pdfIn PDF document text
    • http://tion.hu/upload/file/simekafifizuxodix.pdfIn PDF document text
    • https://safetyhanoi.baohohoanglong.com/userfiles/file/49071046216.pdfIn PDF document text
    • http://ebiddex.com/kcfinder/upload/files/jadepalip.pdfIn PDF document text
    • https://manorhair.com/uploads/files/202203011249099703.pdfIn PDF document text
    • https://forumsevens.com/images/file/ferixawowoxuwip.pdfIn PDF document text
    • https://coloradoofficecleaning.comfortvacation.com/userfiles/file/fomamabusobe.pdfIn PDF document text
    • http://studiomanzetti.it/userfiles/files/vefine.pdfIn PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16222530ae978b---38942455081.pdfIn PDF document text
    • http://acudrved.com/ckfinder/userfiles/files/26708423331.pdfIn PDF document text
    • https://mvfht.ca/kcfinder/upload/files/27207046923.pdfIn PDF document text
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/162096777e1297---femoja.pdfIn PDF document text
    • https://dasyueshan.org/userfiles/file/rifofomibusope.pdfIn PDF document text
    • https://wirut.co.za/XSRYdR1H?utm_term=jio+video+call+appPDF 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_off00032e48.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00032e48.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00032e48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32E48 10096 bytes
SHA-256: 16f7afc1696bf9421699f91f697c706fc1ee38c0a33071b5a00ea54605f5c09d
font_01_sfnt_off000344e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x344E1 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00035bfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35BFC 18748 bytes
SHA-256: 60ca36804783110f785f84a9b22dd2418852577a58cb7e1371880629b9ae906c