Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5de7a12ba21ea40…

MALICIOUS

PDF

433.4 KB Created: 2022-03-28 21:49:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-27
MD5: e578056ed095f7bad74f4962b087bb4c SHA-1: 21090b15290d46de5330b83dd3ff01c46f791410 SHA-256: c5de7a12ba21ea409d7bd22f4872e88f4a67224fc608e38fbccef2546ad979fa
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8548

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.
  • 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 https://norin.co.za/XSRYdR1H?utm_term=g33m02+manual+pdf PDF link annotation
    • http://nextlab-semi.com/files/fckeditor/file/22888111629.pdfIn PDF document text
    • http://goldenagegroup.vip/userfiles/file/30761060114.pdfIn PDF document text
    • https://buka.ru/sadm_files/62761121418.pdfIn PDF document text
    • http://penzionnakrizankach.cz/ckfinder/userfiles/files/22915348756.pdfIn PDF document text
    • http://zahradnisluzby.eu/foto/image/files/wisojiguvebadiwovagibovu.pdfIn PDF document text
    • http://finadev-groupe.com/userfiles/file/17818165742.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16201740e6ddcb---26894796524.pdfIn PDF document text
    • http://ci-tesco.com/kcfinder/upload/files/xitudokixamipakijujimas.pdfIn PDF document text
    • http://riccaassociati.eu/userfiles/files/74885608453.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/igdhsalumgi5o2446v76umsh4u/mezurifobuwofekabo.pdfIn PDF document text
    • http://gtlitalia.com/userfiles/files/tupabamodememapapumute.pdfIn PDF document text
    • https://rambud.pl/uploaded/file/rilarase.pdfIn PDF document text
    • http://studioarclab.eu/userfiles/files/49672106432.pdfIn PDF document text
    • http://windowsplusllc.com/ckfinder/userfiles/files/xawilokatugudevifak.pdfIn PDF document text
    • http://imailbox.nl/images/uploadedimages/file/nokefoza.pdfIn PDF document text
    • https://isleo.com/i_photos/file/31094173396.pdfIn PDF document text
    • http://www.dean-cpa.com/files/adminpic/file/gagaloserolokafoliba.pdfIn PDF document text
    • http://techniq.ae/admin/uploadfiles/file/litoxupeteb.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_off00065968.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65968 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00067083.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67083 18520 bytes
SHA-256: 331e61e047c06341d843385887b5af9cd29978e394984d2839423359612d52b9
font_02_sfnt_off0006a009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A009 10504 bytes
SHA-256: cea7cbbc43a825bbe2f86c5a4aa8787e99d508dd74a5ee0d56d2f419437bdcc3

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