Malicious PDF — malware analysis report

Static analysis result for SHA-256 02a20f6689f4b7fe…

MALICIOUS

PDF

345.5 KB Created: 2021-06-26 14:48:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 77b21d167c9979f6dc98e2714a613755 SHA-1: 4395b1ad2ae849c4685d1891983a3ceb82af739a SHA-256: 02a20f6689f4b7fe608eec52a38723e91bca4503c9f8b406d237a646c56871c4
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF document employs a link farm strategy, directing users to a compromised WordPress upload storage location. The primary lure appears to be a free download, indicated by the SEO redirector link. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9792

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
  • 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.
  • 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://aquamedia.cn/ckfinder/userfiles/files/mitisebazemakewax.pdf In PDF document text
    • http://nakamurasangyou.jp/app/webroot/uploads/files/69908473567.pdfIn PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/1607c509b6b82e---87423262927.pdfIn PDF document text
    • http://tunesistudio.eu/userfiles/files/15874044796.pdfIn PDF document text
    • http://fautographie.org/images/userfiles/files/57916177474.pdfIn PDF document text
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/1606f479f7bde5---fevuxup.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609034684dd30---puzub.pdfIn PDF document text
    • http://ophirtonhotel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16086e0e90cb26---72876683258.pdfIn PDF document text
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/160d4334ddab79---47007622885.pdfIn PDF document text
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bdc6c985b85---sepezemubowekuv.pdfIn PDF document text
    • http://fqcycpa.com/jingkelun/userfiles/files/20210617120545.pdfIn PDF document text
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/1609db8136d27a---xilebunomoderasaxaja.pdfIn PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9c8a7d637c---zamivolijanam.pdfIn PDF document text
    • http://specimport.by/files/files/51355500813.pdfIn PDF document text
    • http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a5c3b461eb9---tidewuvesixe.pdfIn PDF document text
    • https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b955ec21c31---63034666837.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/tf1ak4892hc91loqr7qghqbs49/wulojusaletukotikewaza.pdfIn PDF document text
    • https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/16072dfba3edb2---kikegelabusa.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/zatukima.pdfIn PDF document text
    • https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/8t0b0cf47l658njojqijl9j9g8/kelodejutogolaken.pdfIn PDF document text
    • https://fiambreszav.com/wp-content/plugins/super-forms/uploads/php/files/977949b5b1b70a9010518bd350d7fb2b/36068334316.pdfIn PDF document text
    • http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607accbcd62e1---kukijol.pdfIn PDF document text
    • https://dm288.rs/slicice/file/wimagugasaxubu.pdfIn PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bff238aafe6---6957654582.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=usa+hockey+level+2+open+book+exam+answersPDF 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_off0004f570.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F570 11176 bytes
SHA-256: 4a15126438b9d562b8999c8253d7ee8d92d8bf3e0bbc68b79e15a44fcb4ad0fd
font_01_sfnt_off00050f50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50F50 18480 bytes
SHA-256: ba5cd728db632c8d8c5873816c137c88bff54b51313c18a684934c0510e843c8
font_02_sfnt_off00053f7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53F7F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1