Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9d8d01e2d69aaf9…

MALICIOUS

PDF

69.6 KB Created: 2021-07-05 00:59:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: dd92fa05893bf870bcf79ea959ce3dd0 SHA-1: 7d3b2afb2f692ee86c8a6b596df505ac01c81675 SHA-256: a9d8d01e2d69aaf9e55e48f75edca36d23c3b358a95fcaf454418a662f01e499
156 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, with many embedded URLs pointing to compromised WordPress sites and other disposable hosting. The document body is unreadable, but the presence of numerous external links suggests an attempt to redirect users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

Heuristics 6

  • 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.
  • 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://confetti-seasons.ru/upload/files/lomiparogunajenenelitawe.pdf In PDF document text
    • https://hasekei.jp/userfiles/file/xaminita.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4db97a51d7---vuboti.pdfIn PDF document text
    • http://batiment-tunisie.com/userfiles/file/dufukepijigimulatim.pdfIn PDF document text
    • http://allasclub.com/campannas/file/jilozaxobinuri.pdfIn PDF document text
    • http://www.sevenchurchestour.net/seven/wp-content/plugins/formcraft/file-upload/server/content/files/160dcb1a170bc3---poripilomunijawozobisojab.pdfIn PDF document text
    • https://unosms.us/userfiles/file/fenosegexalagenaziporix.pdfIn PDF document text
    • http://kondicionery-domodedovo.ru/upload_picture/file/29286874493.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c8b5dd5636a---5799403012.pdfIn PDF document text
    • https://familienbilstrup.dk/ckfinder/userfiles/files/51128489721.pdfIn PDF document text
    • http://gchs1969.com/clients/867877/File/46195034066.pdfIn PDF document text
    • http://moyamoya.center/images/hand_uploaded/files/sogojazofevekile.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/e3e4722ee94516cb55a9d9720acefe5d/16138704659.pdfIn PDF document text
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e0fbce29f8---vibonarolejida.pdfIn PDF document text
    • http://pizzeria-millemiglia.de/app/webroot/img/editor/file/lozodexanene.pdfIn PDF document text
    • http://apluskleaning.com/admin/images/file/56435743122.pdfIn PDF document text
    • https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/kgonbt6jdu1g943905m8kstc15/bewiremawizozesipojaligeb.pdfIn PDF document text
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/6c2fa025dbdacdcf401d8f011b1282c4/99219077779.pdfIn PDF document text
    • http://hayatteknoloji.com/webimage/file/5578156149.pdfIn PDF document text
    • http://themultifold.com/wp-content/plugins/super-forms/uploads/php/files/fp8q55pkc94ljga6342o1lfv66/20796363149.pdfIn PDF document text
    • http://bayzones.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/setagapubo.pdfIn PDF document text
    • http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/54eb47208fb712054be3488686618906/33081040882.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/013b26a9dd79af657086a087d98f9966/31228297820.pdfIn PDF document text
    • http://goref.ru/files/file/dunopidisanepukozije.pdfIn PDF document text
    • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/22259b3be0a4ff2bdf0750bde82e8453/24059178256.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=one+punch+man+vs+doomsdayPDF 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_off0000b3a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3A7 14656 bytes
SHA-256: f8da77dbc6b3ca7ea971b3911dddbe1b3ca8f1f9024fc1b8a4c36c11dc0b0717
font_01_sfnt_off0000d8a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8A1 10748 bytes
SHA-256: fd2b88d31ba8b84d0861962ec37bbd8b8406915ad1f38641ce8889158ba9e5c7
font_02_sfnt_off0000f139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF139 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1