Malicious PDF — malware analysis report

Static analysis result for SHA-256 550fc94183974dc4…

MALICIOUS

PDF

482.7 KB Created: 2022-03-05 02:05:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-04
MD5: a980e24084f54871a0a150780385f9d6 SHA-1: 93098aaf6e019f8df17a450c5efa57823c696643 SHA-256: 550fc94183974dc46780075e446b712b16fc86ad1e5d28726d50e0b62c29d767
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ClamAV and exhibits characteristics of a phishing scam. It contains numerous embedded URLs, with one specifically identified as an SEO redirector for a 'free-download phishing' lure. The document body is heavily populated with URLs, and the heuristic 'SE_TRAVEL_SUPPORT_PHONE_SCAM' indicates a high volume of phone numbers, suggesting a social engineering tactic to trick users into calling for support related to travel. The primary attack vector appears to be a malicious PDF acting as a lure for a phone scam.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4438

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
  • 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.
  • 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://otestmanager.com/club/data/userfiles/file/20220224094750.pdf In PDF document text
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/1621021a22ec81---dinovuwu.pdfIn PDF document text
    • http://www.jw-kids.jp/kcfinder/upload/files/wejibuzodapukomomosugitan.pdfIn PDF document text
    • http://www.chestheart.org/assets/ckeditor/kcfinder/upload/files/41442871339.pdfIn PDF document text
    • http://legalhouse.pl/files/files/goxivumefejegodaritug.pdfIn PDF document text
    • http://nebovsem.ru/app/webroot/files/files/36509622027.pdfIn PDF document text
    • http://okinawa-touch.com/app/webroot/js/kcfinder/upload/files/59674854219.pdfIn PDF document text
    • https://sportyou.fr/ckfinder/userfiles/files/36671795903.pdfIn PDF document text
    • https://napraforgohotel.hu/upload/file/zazeb.pdfIn PDF document text
    • http://mrpennarak.com/user_file/file/13934765046.pdfIn PDF document text
    • https://digicpictures.com/downloads/wufolanuwiminibut.pdfIn PDF document text
    • https://latvanysport.hu/upload/files/27601464267.pdfIn PDF document text
    • http://yachtsandtrade.com/files/18283196743.pdfIn PDF document text
    • https://happycpdl.com/backend/web/kcfinder/upload/files/32130726323.pdfIn PDF document text
    • http://state-lithium.com/upload/files/6751419759.pdfIn PDF document text
    • https://agros.net/uploads/file/99607942549.pdfIn PDF document text
    • http://citlak.com/admin/UserFiles/file/27294854659.pdfIn PDF document text
    • http://xn----7sbqwxdbhblh2h.xn--p1ai/data/file/xeketo.pdfIn PDF document text
    • http://www.deco-interieure.com/userfiles/file/84578663474.pdfIn PDF document text
    • https://museuminiaturesbesalu.com/files/88675008713.pdfIn PDF document text
    • http://rem-proekt.com/f/file/xifopomotuso.pdfIn PDF document text
    • http://isisorganizasyon.net/panel/kcfinder/upload/files/rikitenamilikepi.pdfIn PDF document text
    • https://konchris.com/userfiles/file/1645823033.pdfIn PDF document text
    • http://usmp.pnl.ac.id/asset/kcfinder/upload/files/66059207411.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16216e927ab69a---82145428329.pdfIn PDF document text
    • http://vipnjl.com/userfiles/files/navaluwifuvima.pdfIn PDF document text
    • http://vit-physio.de/file/11252929379.pdfIn PDF document text
    • http://lube-stc.com/ckfinder/userfiles/files/25065876798.pdfIn PDF document text
    • https://www.area-tlc.com/public/ckfinder/userfiles/files/28935946364.pdfIn PDF document text
    • https://almudenafernandez.co/ckfinder/userfiles/Files/nopivu.pdfIn PDF document text
    • http://protok.pro/upload/files/51513739359.pdfIn PDF document text
    • https://inovadmin.pavicer.pt/uploads/files/sezixuvowugulebefapugo.pdfIn PDF document text
    • http://biblioteka-belzec.pl/upload/files/nenemolu.pdfIn PDF document text
    • http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161fc256f4bb5b---satudisewuji.pdfIn PDF document text
    • http://coffeexclusive.co.uk/kcfinder/upload/files/giwaxawefurir.pdfIn PDF document text
    • http://daiichihr.com/uploads/news_file/20460429095.pdfIn PDF document text
    • https://tevav.co.za/XSRYdR1H?utm_term=colorlib+free+html+templatesPDF 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_off00071975.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00071975.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00071975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71975 10692 bytes
SHA-256: ab64a32009a4a94e0276c861793c322b06f11c7b52231ab62019beb5491a6664
font_01_sfnt_off000731c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x731C4 19068 bytes
SHA-256: 32b71af9054f8259ead7a663f122f45c5a1b71aa519b249c372a60f42fbe0018
font_02_sfnt_off00076338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76338 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9