Malicious PDF — malware analysis report

Static analysis result for SHA-256 d02a4ab71036b2ab…

MALICIOUS

PDF

89.0 KB Created: 2021-07-02 10:29:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 4ab11339f4ffed59da6c520597418c94 SHA-1: 646d3a7d4811b6d404f126b133b25d6e2d15c22e SHA-256: d02a4ab71036b2ab92af479764c3a8346533b4e913efd6b0aa905eeb0b056e7a
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, with numerous URLs pointing to compromised WordPress sites, likely intended to host or redirect to malicious content. The presence of these links suggests an attempt to lure users to potentially harmful destinations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a6f7fb2015d---31642915649.pdf In PDF document text
    • https://mebelpozakazu.ru/wp-content/plugins/super-forms/uploads/php/files/9ea61a94548ff8ed01517ecf0d95212e/rixomeriput.pdfIn PDF document text
    • https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/e0c040da7caaf78e167f81acb02e7a86/xugixetivologo.pdfIn PDF document text
    • http://santeh.md/img/files/40310769097.pdfIn PDF document text
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/1609046edb4562---siliviwanutesipugog.pdfIn PDF document text
    • https://loyallcanada.ca/editor_files/file/fazoresedaveje.pdfIn PDF document text
    • https://www.qlsny.com/wp-content/plugins/super-forms/uploads/php/files/70e42fccf77234a229869c70117caa63/3514988914.pdfIn PDF document text
    • https://creteservices.com/FCKeditor/userimages/file/digapazozoxasuxot.pdfIn PDF document text
    • https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1608e7e7816fb6---retonegegaxuzakuxekud.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607f8e675207c---68920404637.pdfIn PDF document text
    • http://huiking.cn/uploads/file/050024115107.pdfIn PDF document text
    • https://tanthuantelecom.com/upload/fck/file/23901263561.pdfIn PDF document text
    • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c91d575e8b4---52792399244.pdfIn PDF document text
    • http://agendatourvietnam.com/hinhanh/file/67393283036.pdfIn PDF document text
    • http://eastmoorclassof1970.com/clients/4/43/4343e427eb1b0a0668350338a4d6b623/File/10539100205.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/1ef595eecc15c86592c8b8e57ef11a82/bojezibeberevasukeduwuda.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609eccf220ebf---jajukasiwutikavib.pdfIn PDF document text
    • http://thankschicken.com/uploads/files/28910728085.pdfIn PDF document text
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16074089eadb03---midosuluseromabis.pdfIn PDF document text
    • http://crmloccitanecr.com/campannas/file/tuxokanikonereza.pdfIn PDF document text
    • https://clubforeducation.com/FCKeditor/userfiles/file/35373519451.pdfIn PDF document text
    • https://kodcomputers.ro/2664/uploads/patugupinutaxame.pdfIn PDF document text
    • http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/16096c9ba25ebb---mewojekusigezinovoru.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=harry+potter+theme+music+mp3PDF 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_off0000f5bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5BB 17640 bytes
SHA-256: 2693c9f984bdb76d6f4822c7917e653ea49b6b8e47b93acd6ae5506203e4ca3a
font_01_sfnt_off000123e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123E4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013bfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13BFB 10864 bytes
SHA-256: 22042a4f92348507a61447d69435a955f56bf6dfc32c819fdaa285453271d5ec

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