Malicious PDF — malware analysis report

Static analysis result for SHA-256 445a7bb0196bdf71…

MALICIOUS

PDF

185.5 KB Created: 2021-12-04 16:16:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: ee5eb72fb0f2756db7542d799feb210f SHA-1: 155290dede598edb3aed8cee82c697ecc4888525 SHA-256: 445a7bb0196bdf7168c33d7e01134234678bd5f2be18c9250150236237ce6e99
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, a common technique for executing malicious code. Heuristics indicate the PDF acts as a link farm, pointing to compromised WordPress sites and disposable hosting, suggesting an attempt to redirect users to malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, likely involving phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9487

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
  • 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.
  • 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 https://mkart.it/uploads/file/ridujoserofupiwilefi.pdf In PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613be0964f6e3---muxegonujobenugudazogila.pdfIn PDF document text
    • http://computer-rudolstadt.de/upload/file/39841808086.pdfIn PDF document text
    • https://classconnbio.com/img-jacson/files/rutuse.pdfIn PDF document text
    • http://kortennis.co.kr/B/ck/ckfinder/userfiles/files/mibodojejux.pdfIn PDF document text
    • https://aihr-iadh.org/uploads/FCK_files/file/wekowimogunutaletim.pdfIn PDF document text
    • https://rubin2000-distribuitorshop.ro/userfiles/file/15845158854.pdfIn PDF document text
    • https://darman.shasbodco.com/UploadedFiles/New/file/42610841442.pdfIn PDF document text
    • https://pristineleather.com/userfiles/file/zubasudapi.pdfIn PDF document text
    • https://fleschimmo.lu/userfiles/files/fozarekagidivutudalarag.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16153b4a2a76fc---fifuvipaxomufasisavefitaz.pdfIn PDF document text
    • https://chambres-a-la-ferme-plouzelambre.fr/userfiles/file/10879513912.pdfIn PDF document text
    • http://nacyc.jp/Upload/file/witudakalozuno.pdfIn PDF document text
    • http://bamila.vn/luutru/files/53824853803.pdfIn PDF document text
    • http://nawoo.net/userData/board/file/sabamufemaliveg.pdfIn PDF document text
    • http://mebelhotel.ru/userfiles/files/4479339363.pdfIn PDF document text
    • https://registracijakoncar.com/webroot/js/ckfinder/userfiles/files/mikusarutedekew.pdfIn PDF document text
    • https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/nqgrb0i8tfjpgvtutlajoqhqro/67816904137.pdfIn PDF document text
    • https://distriparkbotlek.nl/userfiles/files/gozidunogigukefidebibun.pdfIn PDF document text
    • http://santinitravel.co/files/others/86105617480.pdfIn PDF document text
    • https://casalindasbakery.com/ckfinder/userfiles/files/kadikatugusufexaf.pdfIn PDF document text
    • http://metamorfozyayincilik.com/userfiles/file/443368625.pdfIn PDF document text
    • http://winfielddeli.com/ckfinder/userfiles/files/kudibe.pdfIn PDF document text
    • http://ingpoggi.eu/userfiles/files/20826881026.pdfIn PDF document text
    • http://www.chiringuitomediterraneo.com/ckfinder/userfiles/files/29879487246.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/RC0zOYPQW8A/uplcv?utm_term=ctr+crash+team+racing+ps1+apkPDF 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_off00027b8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27B8F 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off00029233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29233 10828 bytes
SHA-256: c8f4b27e168e113cba1cab6bda1567a10427b51e5873412457a4707f80882324
font_02_sfnt_off0002ab10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB10 17372 bytes
SHA-256: 486014c9b538886e93d591e0054d34d9a111949bcaeb552d2320a3db6abbee28

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