Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d434426d3489ad…

MALICIOUS

PDF

336.4 KB Created: 2021-12-24 19:12:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 1c5dbf953351326eccf4d31c9ccea4ba SHA-1: e1d6f8bed19a5bb8aff8a1cdd00f1b001d5a4283 SHA-256: c5d434426d3489ad67450bdf41c692afef7fbcf17ed80e59f8513805e78134b7
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6933

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://jobsandhi.com/uploaded_files/userfiles/files/savirewoje.pdf In PDF document text
    • https://ppic.net-line.pl/www/js/kcfinder/upload/files/43138358272.pdfIn PDF document text
    • http://foto-klub.dk/userfiles/file/votuxapo.pdfIn PDF document text
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/161b5acae0f3e0---28465369738.pdfIn PDF document text
    • http://mama-care.com/UserFiles/file/61669710757.pdfIn PDF document text
    • http://wideanglepackaging.com/ckfinder/userfiles/files/gidaja.pdfIn PDF document text
    • http://hysansam.com/fckeditor/userfiles/image/9114853955.pdfIn PDF document text
    • https://ewt.cz/res/file/jegumimeforopijadojumunid.pdfIn PDF document text
    • https://greenline.bg/userfiles/file/96073922004.pdfIn PDF document text
    • https://casacresques.cat/uploads/files/26470773015.pdfIn PDF document text
    • http://jr.ac.th/ckfinder/userfiles/files/vadujelozutubolamakika.pdfIn PDF document text
    • https://mariapolis.es/ckfinder/userfiles/files/jixekupezariwuvarogok.pdfIn PDF document text
    • https://kocarbonag.com/luutru/files/jojadikerevaderububu.pdfIn PDF document text
    • http://kangshi-you.com/uploads/files/202109090636152287.pdfIn PDF document text
    • https://solelane.com/ckfinder/userfiles/files/79663497544.pdfIn PDF document text
    • https://tckontrola.zagi.hr/files/galilujaziporematuliginis.pdfIn PDF document text
    • http://keralastatetailorsassociation.com/userfiles/file/derasanut.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/b892f6d916ca3f6b6905203112f61c80/71623781543.pdfIn PDF document text
    • http://innovatepc.com/userfiles/file/1376367330.pdfIn PDF document text
    • https://botroul.be/uploads/90452190119.pdfIn PDF document text
    • https://maintogelonline.info/contents/files/tokodek.pdfIn PDF document text
    • http://quiltingacademy.info/fckeditor/userfiles/file/54135730843.pdfIn PDF document text
    • http://karpatskiles.ru/store/file/93572243248.pdfIn PDF document text
    • http://vinhthuan.vn/upload/files/dazezerafar.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/RhDyTiV0TgQ/uplcv?utm_term=delving+deeper+character+sheetPDF 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 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_off0004d5fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D5FA 17492 bytes
SHA-256: be998713b4b5fa612f3e31099ba2c4f4fb55492e10b91df7ffe00b3821ca2dfb
font_01_sfnt_off0005038d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5038D 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off00051a31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51A31 10740 bytes
SHA-256: 4be4d5f6bcb059680c0c509c2b334dfa69222e099e6706e7b03e516a3bdbc833

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