Malicious PDF — malware analysis report

Static analysis result for SHA-256 b618745926f505c4…

MALICIOUS

PDF

354.1 KB Created: 2022-01-02 15:44:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-15
MD5: 9ba74c54c445a9f18d2d53c1a74aff63 SHA-1: 7efd471c8bad55ce4b85ba1d0915cd47eacd6d09 SHA-256: b618745926f505c42b1ffc9b268b2e8024af78821dbb7ee8412268386d124563
271 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8837

Heuristics 9

  • 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • 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.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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://cmorshomecareassociates.org/uploaded_files/userfiles/files/65532602622.pdf In PDF document text
    • https://b-diagnostic.com/kcfinder/upload/files/20871340264.pdfIn PDF document text
    • https://pasarangroup1.com/contents/files/lunadanonegab.pdfIn PDF document text
    • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/88b7270180e026ee54390164af17d7eb/66059680689.pdfIn PDF document text
    • https://ardiinerkh.mn/uploads/userfiles/files/72570594549.pdfIn PDF document text
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/16163afc70b827---35958702866.pdfIn PDF document text
    • http://gruaszarate.com/ckfinder/userfiles/files/liliwolela.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132521d4daae---18381945165.pdfIn PDF document text
    • http://urparitet.ru/admin/ckfinder/userfiles/files/birudinutuwebagavofawutaf.pdfIn PDF document text
    • https://ssatripoli.org/userfiles/file/55292063798.pdfIn PDF document text
    • http://hotspot-usa.com/js/upload/files/kavume.pdfIn PDF document text
    • http://tavio.su/files/file/jirorajovifulagadewa.pdfIn PDF document text
    • https://denizlihorozu.com/resimler/files/jotefisoterapale.pdfIn PDF document text
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/161781f0ac8dbc---90814451263.pdfIn PDF document text
    • https://mocktest.realestateerp.in/FCKeditor/file/penigipefizisonibivujuz.pdfIn PDF document text
    • http://tamtamphat.com/upload/files/22902118810.pdfIn PDF document text
    • https://hanomanberjaya.com/contents/files/sikoromipagu.pdfIn PDF document text
    • https://ladulceseguros.ar/noticias/fckeditor/file/10592855701.pdfIn PDF document text
    • https://cantellodetersiviprofessionali.it/uploads/file/sajokufidepubo.pdfIn PDF document text
    • http://www.forexfunction.com/ckeditor/kcfinder/upload/files/xowenerisufebuvabaf.pdfIn PDF document text
    • https://www.cartorioleandrofelix.com.br/kcfinder/upload/files/23732066296.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/TSvcnjQ06Jg/uplcv?utm_term=rockstar+movie++worldfree4uPDF 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_off000518fd.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000518fd.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000518fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x518FD 11000 bytes
SHA-256: abdc2db807f4011969fa83c81d630b3a97184289f2dde6df06e1507bcdec7a4b
font_01_sfnt_off000532bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x532BD 18940 bytes
SHA-256: a8d5d29596537e61955d1930682ba1f5e81c1d6a03bbb049f0b2afac1a8ba4ce
font_02_sfnt_off0005639d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5639D 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336