Malicious PDF — malware analysis report

Static analysis result for SHA-256 2803020e79e9a102…

MALICIOUS

PDF

96.5 KB Created: 2021-07-23 12:52:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 06a78ddb1ab7deba947eff7c747aa2b2 SHA-1: 2da5a4b051e5d06af5095ad782608740ac0e1739 SHA-256: 2803020e79e9a102b2ffcad6dd33ebcc486d941c0af31d21b92a7d88393af753
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links, many of which point to compromised WordPress sites, suggesting a phishing or redirection scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or distributing further malware. No scripts were extracted, so the primary attack vector appears to be the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://aelma.com/sites/default/userfiles/file/64699119273.pdf In PDF document text
    • https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/6e2a85d6b0b2cedcf5a772c542b1f16a/22105189702.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/160ddae4a84e27---94883933484.pdfIn PDF document text
    • http://lushexperiences.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075941723b88---gofubilotov.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/4hsqrfnsf62fqsrgv5cvmtvons/marulivedagogutodonemazas.pdfIn PDF document text
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16083b7d6756a5---puvazupizaka.pdfIn PDF document text
    • https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/ptv2m0unjbc8f3i3gh64kvo7t4/73262251001.pdfIn PDF document text
    • http://tnslib.net/userfiles/files/bolefokevakakoguk.pdfIn PDF document text
    • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/6d436bf185ab62168c9919223951c804/jivone.pdfIn PDF document text
    • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/6c661da1a77620d468e8463af116fec0/21812734445.pdfIn PDF document text
    • http://aquatherm-graz.at/files/bemadijodivokozaxekidowik.pdfIn PDF document text
    • http://hb1004.com/userData/board/file/92481939583.pdfIn PDF document text
    • http://xn--9p4b29dncp2cc6y.net/upload/fckeditor/file/rolevofox.pdfIn PDF document text
    • https://ivaco.it/file/supibidigagazorisodasop.pdfIn PDF document text
    • http://cwesp.biz/upload/file/zevitagotobet.pdfIn PDF document text
    • http://www.allatpatikapecs.hu/images/file/71654251683.pdfIn PDF document text
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607747547a9d4---bivigux.pdfIn PDF document text
    • http://architettogherardi.eu/userfiles/files/18962725796.pdfIn PDF document text
    • http://lushexperiences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0ca91764be---sitifopogujefutodoforum.pdfIn PDF document text
    • http://cambresisemploi.fr/ckfinder/userfiles/files/vogatofidilakunix.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608ac970b5690---40534617648.pdfIn PDF document text
    • http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/61452596f907f1a4cd5b1b047c88532f/lupuna.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=john+steinbeck+the+grapes+of+wrath+summaryPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011188.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11188 18828 bytes
SHA-256: d9953d27e00682879ef3f4c3e550a5e464d05e9d23d8a6ea11a16c14d925b109
font_01_sfnt_off00014070.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14070 11404 bytes
SHA-256: c6fcaf3906d5468ef5f72fcf8083d1008b4a5db523cc3b07232ffa11a29cd956
font_02_sfnt_off00015b1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15B1D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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