Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b7e7817bb93a9f…

MALICIOUS

PDF

346.3 KB Created: 2022-01-11 08:50:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 38e723259c49edb407e9fb6be1c1f494 SHA-1: 6d48e6308408c24f97e4859e9f03e7efce958c5c SHA-256: 72b7e7817bb93a9f7d25e50866c84d7431fed398658c2db0750c67e13703f081
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5227

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://tingchucontrol.com/Uploadfiles/files/giniwifitubajezejab.pdf In PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/16191c9bdbc547---xukusogigavepo.pdfIn PDF document text
    • http://xn--j1aii.su/userfiles/file/tokuzuxipimefijufiwowal.pdfIn PDF document text
    • http://fapannimario.it/userfiles/files/lirupemixug.pdfIn PDF document text
    • http://zae.me/datafiles/file/44280888675.pdfIn PDF document text
    • http://gurukripapublicschool.com/userfiles/file/19087292479.pdfIn PDF document text
    • https://33mobility.net/uploads/files/jegagiwanawof.pdfIn PDF document text
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615410ecc112f---68194964117.pdfIn PDF document text
    • https://eletmodguru.hu/files/files/31856755165.pdfIn PDF document text
    • http://ueros.fr/admin/ckfinder/userfiles/files/jatupepovokilog.pdfIn PDF document text
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/161dc9c5262796---xofazawe.pdfIn PDF document text
    • http://bienchidan.org/uploads/files/wedejazopuk.pdfIn PDF document text
    • http://msdoubrava.cz/foto/images/file/52126143540.pdfIn PDF document text
    • https://schneider-rozetki.su/kcfinder/upload/files/wenutusaguwibo.pdfIn PDF document text
    • https://www.prshots.com/ckfinder/userfiles/files/31803217688.pdfIn PDF document text
    • http://wronba.com/uploads/wysiwyg/file/dogepodafimiz.pdfIn PDF document text
    • http://ikuma-car.com/js/upload/files/28347385787.pdfIn PDF document text
    • https://amgab.se/wp-content/plugins/formcraft/file-upload/server/content/files/16177635d3f3b7---90459236066.pdfIn PDF document text
    • http://joyerialaplaza.com/ckfinder/userfiles/files/nulupamexutegux.pdfIn PDF document text
    • http://irs-messtechnik.at/upload/wijenedowonipaxuv.pdfIn PDF document text
    • http://archbot.pl/files/file/majugigaruz.pdfIn PDF document text
    • https://avukat.kocgrafik.net/upload/files/faxovipinob.pdfIn PDF document text
    • https://ptogel1.com/contents/files/zesaninotejegabuxesinezar.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/cmwvf4RlXg4/uplcv?utm_term=binomial+series+proof+pdfPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004e8fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E8FA 10612 bytes
SHA-256: 5063e24d8f49b6e4836cbb974f0192c88b279ace8d645955572d8da3647dc17c
font_01_sfnt_off00050129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50129 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off000517c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x517C8 21900 bytes
SHA-256: c3fcaf238d4e9779df79b0d760d301d9274580e7973b157857bb840fd344bb5d
font_03_sfnt_off00055165.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55165 1780 bytes
SHA-256: cf43ea07d0e14c5dadc3c8d1a3fd6347ba51c91ab3c5d9ef8ee3d45ec84741db