Malicious PDF — malware analysis report

Static analysis result for SHA-256 0976ba8a250c8628…

MALICIOUS

PDF

245.7 KB Created: 2021-06-27 23:51:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: 7dd90bf805387caf18d9992ffc328d19 SHA-1: 60282f4b18b3d4f0828b0c9fb45e85eeb8c02029 SHA-256: 0976ba8a250c86287f2ace25c5d1d2ec53c8317acf120244df09ffd5943c9e23
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The PDF contains numerous links, many pointing to compromised WordPress upload directories, suggesting a link farm designed to redirect users to malicious content. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9850

Heuristics 5

  • 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.
  • 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://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16084f22f308ce---neverup.pdf In PDF document text
    • https://omomediacion.com/wp-content/plugins/super-forms/uploads/php/files/82317fcde9adef1b63d31dec823f5c0f/20626969269.pdfIn PDF document text
    • https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/c4631c3abf24d588993cd4f02f63238e/jemonazupevibekavifezeze.pdfIn PDF document text
    • http://airholic.com/UpFiles/WebEditorFiles/file/wugod.pdfIn PDF document text
    • http://cityhelps.org/clients/6/61/61afa7a028a8e04f14432b0fece6f2b0/File/gibitiluxuva.pdfIn PDF document text
    • http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088dcea532cc---pipiziro.pdfIn PDF document text
    • http://michelesherrinlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/73477352799.pdfIn PDF document text
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160815ca7c8070---murabuxodugumigova.pdfIn PDF document text
    • http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/160af6a10d3b83---nekoledip.pdfIn PDF document text
    • https://hospvetcentral.pt/site/upload/file/5889477477.pdfIn PDF document text
    • http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/e29bbe547628757dc52e4284510b905c/pufalafowesu.pdfIn PDF document text
    • https://optimuselearningschool.com/learning/site/images/uploadfiles/wadugivitaromeza.pdfIn PDF document text
    • https://ddshower.com/ckfinder/userfiles/files/sopovabeguxeme.pdfIn PDF document text
    • https://pinotcar.com/wp-content/plugins/super-forms/uploads/php/files/af01d5e2d64fedfc97d7bb5d1bca31ff/zuwupapaxilajunubab.pdfIn PDF document text
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606f607b1a8f3---muralu.pdfIn PDF document text
    • https://lapalettedesarts.fr/gestion/file/fozibizovotezoxunamezo.pdfIn PDF document text
    • https://oiweld.com/wp-content/plugins/super-forms/uploads/php/files/83a362a72de7f9f85bb295c8dbb44e86/67395850217.pdfIn PDF document text
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609a49e69adaa---82453377866.pdfIn PDF document text
    • http://alexhofford.com/temp/files/file/56878857948.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608bfe9a3d870---92079266652.pdfIn PDF document text
    • http://rafaelokazakov.com/file/88147346376.pdfIn PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/961142ee54302be0088ca76640c4d901/rabapam.pdfIn PDF document text
    • https://omomediacion.com/wp-content/plugins/super-forms/uploads/php/files/d697ad5e8b49c9116992affbe9868e76/64316866842.pdfIn PDF document text
    • https://pilotcenter.gr/wp-content/plugins/super-forms/uploads/php/files/3f766j2ct4bi6k9mlbictrgl9k/ganigipafesixi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=2+timothy+all+scripture+is+inspired+by+godPDF 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_off00035063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35063 34676 bytes
SHA-256: cd80895cea857caf3602dd3eeb06b6ae032c6cc8281a945bd7cd7a57a32a51a7
font_01_sfnt_off00039683.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39683 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0003ae9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3AE9A 11336 bytes
SHA-256: 03c1106313671a588f4f28a22eb7f5307a3cb203eb111a150aa7c389da778c33

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