Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca6706ea34cd88db…

MALICIOUS

PDF

314.8 KB Created: 2022-01-07 22:07:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-07
MD5: b838fbba22f26b14779c62e1f217a34c SHA-1: 81abfbaca573354d77831b41f2aa4c9532db6cc5 SHA-256: ca6706ea34cd88db8c784c4759d7c73692c9598519d811752da78a7bb8e846d3
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7334

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 http://onlinepravenconsultant.com/uploads/wysiwyg/files/61005457899.pdf In PDF document text
    • http://picart-personal.pl/fckupload/upload/file/81560072366.pdfIn PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16151337b93b91---19987396979.pdfIn PDF document text
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/161b63be19271c---penufiwi.pdfIn PDF document text
    • https://itchanoi.vn/uploads/news_file/vokewibemuxomesoxav.pdfIn PDF document text
    • https://bierun.travelshops.pl/userfiles/file/99005118259.pdfIn PDF document text
    • http://stringquartet.biz/web/images/fck/file/vipula.pdfIn PDF document text
    • http://musik-fachberatung-neumarkt.de/images/uploadedimages/file/fupuburaje.pdfIn PDF document text
    • http://seikico.net/img/files/nurud.pdfIn PDF document text
    • https://tivirtual.com/userfiles/file/49302484151.pdfIn PDF document text
    • http://greatwalledmond.com/ckfinder/userfiles/files/69993296863.pdfIn PDF document text
    • http://konditsionery-odincovo.ru/upload_picture/file/redubef.pdfIn PDF document text
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/161d805c9db2e7---42480498577.pdfIn PDF document text
    • http://anaheim81.com/kcfinder/upload/files/73257413042.pdfIn PDF document text
    • http://www.armstrongre.com/files/files/sulupise.pdfIn PDF document text
    • https://emilline.dk/ckfinder/userfiles/files/21052994140.pdfIn PDF document text
    • http://vps73.juicy-group.com/editor_upload_image/file/4873527793.pdfIn PDF document text
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/1c0b8c5e6d3de977caa941c0b2cb202a/gufululaxireded.pdfIn PDF document text
    • http://vietsonplastic.com/uploads/userfiles/file/nunabalupifud.pdfIn PDF document text
    • http://mcap.cz/images/uploadedimages/file/51246872110.pdfIn PDF document text
    • http://investmedic.com/app/webroot/assets/js/kcfinder/upload/files/solerubezaje.pdfIn PDF document text
    • http://tw-sincere.com/upfiles/editor/files/42666099413.pdfIn PDF document text
    • http://trustycctv.com/ckfinder/userfiles/files/kuresikotuxeza.pdfIn PDF document text
    • http://sobateracota.ro/mm/file/letav.pdfIn PDF document text
    • https://specialgarden.ro/userfiles/file/91410918214.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/D9plVHj2VOU/uplcv?utm_term=online+chatting+apps+for+androidPDF 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_off00047eea.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00047eea.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00047eea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47EEA 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off00049589.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49589 17312 bytes
SHA-256: d5701d683ea23d164a5ea1777ec2a7f373fb4a003f658666b8b5eccf9b315ef0
font_02_sfnt_off0004c2c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C2C1 10924 bytes
SHA-256: b4b41cd5dda1ffc8354aad09299924fa9ef27e2c55efd39a39a345428f2a371d