Malicious PDF — malware analysis report

Static analysis result for SHA-256 624972f54aa28e23…

MALICIOUS

PDF

87.2 KB Created: 2021-10-12 16:05:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-29
MD5: fa1af790df8bf08cf058832ee9d6f60d SHA-1: 5bb30988e3c14c770c4c733de3a358e705716160 SHA-256: 624972f54aa28e23767cf7c801b714750b32775aa867b6d366008cc22314c1c7
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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 http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161347fbc79ab1---tevigojirepawodedu.pdf In PDF document text
    • https://xn----7sbeo1acdy3adh.xn--p1ai/userfiles/file/roputebowuv.pdfIn PDF document text
    • http://imosa.asia/uploads/files/202109160648093877.pdfIn PDF document text
    • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/161518d13dc2ae---tajeliperipaviti.pdfIn PDF document text
    • http://klgd.spokoino.ru/i/upload/files/vavitukewigamuvamibu.pdfIn PDF document text
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/161380f4fcf94c---47542933631.pdfIn PDF document text
    • http://pekingtogo.com/uploads/files/42512354658.pdfIn PDF document text
    • http://sunway.me/uploads/file/261150071171.pdfIn PDF document text
    • http://hyunsin.net/userfiles/file/nupebirojurakap.pdfIn PDF document text
    • http://otestmanager.org/club/data/userfiles/file/20210914155443.pdfIn PDF document text
    • https://www.anoregmt.org.br/ckeditor/ckfinder/userfiles/files/gowisuxal.pdfIn PDF document text
    • https://hondaotohaiphong.vn/upload/files/vibujuzosita.pdfIn PDF document text
    • https://nicklason.se/ckfinder/userfiles/files/furovofuzukuk.pdfIn PDF document text
    • https://urology-andrology.com/userfiles/file/jomite.pdfIn PDF document text
    • http://abwingsde.com/uploads/files/dojekotujibejano.pdfIn PDF document text
    • http://probeg2000.ru/files/userfiles/files/15030009191.pdfIn PDF document text
    • http://studiophotosfashion.it/userfiles/files/depulanoje.pdfIn PDF document text
    • http://mfcpavpos.ru/file/51447198703.pdfIn PDF document text
    • http://pcserviszlin.cz/ckfinder/userfiles/files/wawore.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615d58ce0c3c6---dekafavodizuzesokigow.pdfIn PDF document text
    • http://phone-server.com/userfiles/file/relibujefowexago.pdfIn PDF document text
    • http://regalmotors-jp.com/js/upload/files/73685975227.pdfIn PDF document text
    • https://xtrafitcoaching.com/www/images/files/norexaxeradiwa.pdfIn PDF document text
    • https://ap-qatar.com/userfiles/files/gijudegumef.pdfIn PDF document text
    • http://mabo-meccanica.eu/userfiles/files/70783332756.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/23D8k0Ec_6w/uplcv?utm_term=parable+of+jesus+and+the+lost+sheepPDF 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_off0000ecdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECDF 10876 bytes
SHA-256: 5fa7ff7067df8606d93e1d8be2fe7fe6839aa25d7418e178e85ce3c6cf36f609
font_01_sfnt_off000105c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105C1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011dd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DD3 18984 bytes
SHA-256: 3850afd61fee7e8fbfb3f58220738c8e51c56387fc290be78205ff8093e383db