Malicious PDF — malware analysis report

Static analysis result for SHA-256 3055a45c61429926…

MALICIOUS

PDF

105.6 KB Created: 2021-07-06 23:02:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 3ca9d779089de92572a46467bc2af86c SHA-1: 13287097d1cab316796823d62fcac86124769a65 SHA-256: 3055a45c614299262db913e3b957d99b42886edc8ee187105f946d23f9312118
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of links pointing to compromised websites, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body is heavily obfuscated and does not provide direct user-facing content, but the presence of numerous links to potentially malicious domains is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

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://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/idqc5utu189cl0pkn0mjdvfvr4/dofimemitolodomaxonesejat.pdf In PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/86bc857fbb5a7c0e6a2e0afacf6aa381/97866743435.pdfIn PDF document text
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/801ec072b0a0ac31dd4b7250010cefbd/19875259359.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/4oun0c5lt652hp0smvnad1prkf/lusupokotijigan.pdfIn PDF document text
    • https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16093e7ea6b27f---31025588748.pdfIn PDF document text
    • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/1q1h34q8nbrdlrj67dj2lcnmrt/13450903760.pdfIn PDF document text
    • https://louvre.lv/res/wysiwyg/file/66222499798.pdfIn PDF document text
    • http://hydrem.ru/images/file/28105676968.pdfIn PDF document text
    • http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5fa94f31d---minutokot.pdfIn PDF document text
    • https://www.asahinafunnels.com/wp-content/plugins/super-forms/uploads/php/files/b0v9vhv23n31b7k8t3l96sn0vg/xonuvubepobawi.pdfIn PDF document text
    • http://gdbchurch.com/clients/43262/File/82499076880.pdfIn PDF document text
    • http://njf724.com/basefile/janatalnajafcom/files/28211542358.pdfIn PDF document text
    • https://www.beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/99d3b8c2c2a75e77bd15a5416086a7b6/gepeg.pdfIn PDF document text
    • http://melly-incendie.fr/img_db/durimata.pdfIn PDF document text
    • https://diedacorporation.net/freesiafiles/file/kijajadebelotaju.pdfIn PDF document text
    • http://agendaalzheimer.org/files/galeria/files/negajogabede.pdfIn PDF document text
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/16091bfe32febe---lugavanimomuxodame.pdfIn PDF document text
    • https://qualitylightsolutions.com/wp-content/plugins/super-forms/uploads/php/files/025eb4afb5fdf423bd89d04cf06ee04a/lipojudidulobezifede.pdfIn PDF document text
    • http://skpizzasubs.com/uploads/files/lefuwibebaxewomo.pdfIn PDF document text
    • http://backupcenters.com/userfiles/file/82551334578.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c7ae8cc2a45---49618603916.pdfIn PDF document text
    • https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/v6j04d4t604mtr37hst4v068c9/63318454757.pdfIn PDF document text
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a16aa1cad35---46548535903.pdfIn PDF document text
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088409882d60---tekexunubexu.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1606ef7e3afad0---2948762723.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=doctor+negligence+casesPDF 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_off00013c66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C66 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00015478.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15478 17336 bytes
SHA-256: 0c6bd609690a398d7cd0f7d9d61a7c2443c14f2baeffe9b39ccfd5285e557e74
font_02_sfnt_off000181b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x181B4 10408 bytes
SHA-256: 34c1e90e8ad4718e1cea772d616c3edb350c3258d4aa9a8e56252de3d61cd41b

Open this report in the interactive analyzer, or submit your own file for analysis.