Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd7bfbafc9533045…

MALICIOUS

PDF

75.9 KB Created: 2021-12-13 08:42:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: e64e3b613f6da0acf2e270a0737d431c SHA-1: 6d509317b77a83db7beb0d3510e0de9719786a35 SHA-256: cd7bfbafc95330453f1892f22e0065e89445bb3bf5367ef51281e1dc450591d3
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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://ingegneriarossi.it/userfiles/files/xufopajagadeluwetuwapake.pdf In PDF document text
    • http://www.juthamasclinic.com/upload/finder/files/56269018063.pdfIn PDF document text
    • http://modelseafarm.com/kweb/ckfinder/userfiles/files/97092622040.pdfIn PDF document text
    • https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/107d97f0a292f94ef864883edbd2b461/91880686583.pdfIn PDF document text
    • http://k-yoga.org/file_upload/spaw_upload/file/20211205002624.pdfIn PDF document text
    • http://jjkxmy.com/upload/files/202111260912317518.pdfIn PDF document text
    • https://saunadlaciebie.pl/userfiles/file/34476604133.pdfIn PDF document text
    • http://kukubara.com/zdjecia/file/88350303253.pdfIn PDF document text
    • https://aodaixuan.vn/app/webroot/upload/image/files/43338189471.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/161b64113eb19d---71110977972.pdfIn PDF document text
    • https://parc-hotel.info/file/nomefawewirukopunumuf.pdfIn PDF document text
    • https://tungafilm.com/dorceiys/ckfinder/userfiles/files/38448916005.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/puvawigemaku.pdfIn PDF document text
    • https://futurefacesnyc.com/uploads/file/lajewimefupef.pdfIn PDF document text
    • http://chuaphucluong.com/uploads/image/files/wikaxuwi.pdfIn PDF document text
    • https://rubin2000-distribuitorshop.ro/userfiles/file/37202611211.pdfIn PDF document text
    • http://bienchidan.org/uploads/files/megaz.pdfIn PDF document text
    • http://mathcountsoutreach.org/userfiles/file/takulivi.pdfIn PDF document text
    • https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/92c65e62a224ba9281a5efe6653b4975/wixowarejujewerivasod.pdfIn PDF document text
    • https://eirai.org/editor/ckfinder/userfiles/files/24246775294.pdfIn PDF document text
    • http://jyjjapan.jp/files/ckeditor/files/86138180367.pdfIn PDF document text
    • https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/0757cd270689d46c0cfe03c3e4ee703f/konabukazawodafomu.pdfIn PDF document text
    • http://isisthailand.org/file_media/file_image/file/57147239142.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/RhDyTiV0TgQ/uplcv?utm_term=what+to+do+after+12th+for+engineeringPDF 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_off0000c50b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC50B 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off0000dbaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBAF 10584 bytes
SHA-256: 4e3cbd72412b10116dd6b5b32a038dd93e623f10ff14d88ce6bfe1c064a31344
font_02_sfnt_off0000f3b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B4 17576 bytes
SHA-256: 657f691b1d9930fe8d5fde1d419323a6fd4d418fe465fdab119b37183b64b4a5