Malicious PDF — malware analysis report

Static analysis result for SHA-256 4459ceaae9d56ca1…

MALICIOUS

PDF

230.4 KB Created: 2022-02-03 12:27:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-11
MD5: 637476e8cc43dbe45a62ac40cd216d28 SHA-1: 869cd5b53c381b5ff15218b4a2f3f957b165a14f SHA-256: 4459ceaae9d56ca19156910c4f2364f3202bdaa4bf6065a4dac51afad11a24ff
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8208

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=nintendo+3ds+emulator++for+android+apk PDF link annotation
    • http://vdadanang.vn/app/webroot/assets/files/22937391334.pdfIn PDF document text
    • http://hepiran.com/cache/fck_files/file/bawutebodukoxaw.pdfIn PDF document text
    • http://cee1968.com/ckfinder/userfiles/files/kepotowomusegizeted.pdfIn PDF document text
    • https://aiaciran.org/cache/fck_files/file/sawukufeguwoxemowenefejuw.pdfIn PDF document text
    • http://rabotatver.ru/userfiles/admin/2407167248.pdfIn PDF document text
    • https://alakharia.com/public_html/userfiles/file/12344947689.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/cea62e186ccefe01d6795cb98ef1dfaa/53464068116.pdfIn PDF document text
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/160f85ace58e74---89122490309.pdfIn PDF document text
    • http://davidthurstonphotography.co.uk/ckeditor/kcfinder/upload/files/sakosuduxiwibifavebof.pdfIn PDF document text
    • https://xosobacninh.vn/webroot/img/files/fomanivoso.pdfIn PDF document text
    • http://www.verneteco.com/ckfinder/userfiles/files/6204514462.pdfIn PDF document text
    • http://pazarziraat.com/userfiles/file/jizaremawibiwaxaludomog.pdfIn PDF document text
    • https://qcbusa.barettis.com/userfiles/file/38077093655.pdfIn PDF document text
    • http://www.groupkms.com/ckeditor/kcfinder/images/files/pajebabofomuwobikowexuloz.pdfIn PDF document text
    • https://hojoairport.com/images/file/24348337119.pdfIn PDF document text
    • https://xedulichhaiphong.vn/images/news/files/fuwikama.pdfIn PDF document text
    • http://srimmigrationconsultants.com/kcfinder/upload/files/36046291661.pdfIn PDF document text
    • https://cmfnepal.org/userfiles/files/1366194057.pdfIn PDF document text
    • http://bowenlawmt.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/zidigujurefimapibodusowug.pdfIn PDF document text
    • http://topenglish.sk/app/webroot/gallery/files/17625763366.pdfIn PDF document text
    • https://nhaccugiare24h.com/uploads/userfiles/file/42066937146.pdfIn PDF document text
    • https://evergreencans.com/userfiles/file/fovofidinenirivaju.pdfIn PDF document text
    • http://accutindustry.com/Upload/files/20220203072823.pdfIn PDF document text
    • https://gumpasteflowersbysuzette.com/fckeditorfile/file/92925403831.pdfIn PDF document text
    • https://actionalbertafoundationrepair.com/nbloom/fckuploads/file/dokegatewatewoxenofil.pdfIn PDF document text
    • http://aftp.bg/userfiles/file/ronozaloxexipalotumoxojaz.pdfIn PDF document text
    • http://gazdalkodjokosan.hu/img/userfiles/file/23680291522.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/e095ca98c7d371ca7c974b49d4e79364/numukuvekunilijakokipa.pdfIn PDF document text
    • http://skonasystems.com/userfiles/file/46737130005.pdfIn PDF document text
    • http://part-service55.ru/kcfinder/upload/files/xotefepegupazus.pdfIn PDF document text
    • http://geteffective.biz/uploadfiles/file/xetiramixi.pdfIn PDF document text
    • https://myleague.vn/uploadfiles/kcfinder/files/ronezefofuvuzizawuxuweluw.pdfIn PDF document text
    • http://pcwest1980.com/clients/9/9b/9b13e9c1eb96aaf026ead536bb80a376/File/75128943481.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_off00032408.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32408 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00033b23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33B23 21340 bytes
SHA-256: 8d535d126bbba5b0e87f4a3fba282b23b9dffbedbba1387ffdc7fd6086ea842e
font_02_sfnt_off000370a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x370A5 11000 bytes
SHA-256: e4b05f0ecfcae2be5dfda35b200521482702a2ffd55300c1fbee6de97f477e2b