Malicious PDF — malware analysis report

Static analysis result for SHA-256 de404fa548b4d9f5…

MALICIOUS

PDF

390.7 KB Created: 2022-02-28 14:59:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-04
MD5: 4aaba02cc1f022ceb79afa0a5c970612 SHA-1: 72414125e002dfeaba9c4d17188b04abd553f4c5 SHA-256: de404fa548b4d9f54abc0602c9d52a2a1b94c414ca7c645eb42ed075c833361a
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7274

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 https://colod.co.za/XSRYdR1H?utm_term=climate+change+report+may+2019 PDF link annotation
    • http://reklamavysocina.cz/UserFiles/File/94815495452.pdfIn PDF document text
    • https://edftrans.serwiskonsularny.pl/images_user/file/88349966974.pdfIn PDF document text
    • http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161f94bc08ac8c---34529106263.pdfIn PDF document text
    • http://cwesp.biz/upload/file/zepavobajabamaziga.pdfIn PDF document text
    • http://www.mswest.co.jp/cmsdesigner/kcfinder/upload/files/31066184205.pdfIn PDF document text
    • http://polkovnik.su/upload/file/suzeboxegejowupumuvo.pdfIn PDF document text
    • http://stylingstories.nl/kcfinder/upload/files/vapiwu.pdfIn PDF document text
    • http://studiodara.eu/userfiles/files/lajuga.pdfIn PDF document text
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f99cc54fbb2---33381127652.pdfIn PDF document text
    • http://tctrack.vn/images/newtech/files/dosukevexirotolilowego.pdfIn PDF document text
    • https://pmfegypt.com/userfiles/files/47149566710.pdfIn PDF document text
    • https://saleskerala.com/ckfinder/userfiles/files/54541594189.pdfIn PDF document text
    • http://daeryuhealthcare.com/ckupload/files/91090544072.pdfIn PDF document text
    • https://silverstonedevelopments.com/ckfinder/userfiles/files/wadali.pdfIn PDF document text
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621caddbcadb6---4827786096.pdfIn PDF document text
    • http://rtm-plus.com/ckfinder/userfiles/files/39363910294.pdfIn PDF document text
    • http://atlantidaagency.com/kcfinder/upload/files/6445970374.pdfIn PDF document text
    • http://mvsexpo.ru/admin/ckfinder/userfiles/files/kesuwup.pdfIn PDF document text
    • http://atomiccm.com/userfiles/files/90984505744.pdfIn PDF document text
    • http://volareinmongolfiera.it/userfiles/files/18884099467.pdfIn PDF document text
    • http://stapi.org/assets/kcfinder/upload/files/deseninezerefuvad.pdfIn PDF document text
    • https://receptabc.hu/images_banner/files/24180071430.pdfIn PDF document text
    • http://applyforloansnow.ca/site-uploads/memiri.pdfIn PDF document text
    • http://doicoffee.co.jp/js/kcfinder/upload/files/15903280635.pdfIn PDF document text
    • https://kuzeyilac.com/resimler/files/risepasuw.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 extracted file (font_00_sfnt_off0005a132.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005a132.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005a132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A132 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0005b852.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B852 11260 bytes
SHA-256: 786bc9e73bcd60d60ac736645484b6d626660382ea953790afa000dc6bac2a62
font_02_sfnt_off0005d29b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D29B 21372 bytes
SHA-256: e58eed867dbd630c8e44c162a3885a63e1e8a912ad3b588520452cb372492a76