Malicious PDF — malware analysis report

Static analysis result for SHA-256 32bb0951be546091…

MALICIOUS

PDF

102.0 KB Created: 2021-07-26 05:21:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 32c2a02efae2f6a8f864936ae4a0b045 SHA-1: 8dfb6e2e073306b1b0c2cd43182c1727de96f302 SHA-256: 32bb0951be546091350012a0796fb6fd60fb5082326ef0624614020537c95a55
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to compromised websites and disposable hosting, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160f249059e916---61397617723.pdf In PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/1606ee76d0293f---53798118122.pdfIn PDF document text
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/6c84c448b8ee52a7ec3c54b7cae4ed0a/sabazuru.pdfIn PDF document text
    • http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/j1j8rbnpmf886bmv73fd5nms44/90345408250.pdfIn PDF document text
    • https://alamansyria.com/userfiles/file/49924765933.pdfIn PDF document text
    • https://iword.de/userfiles/file/26795946294.pdfIn PDF document text
    • https://songuryazilim.com/calisma2/files/uploads/bominaxofexulapo.pdfIn PDF document text
    • http://csc-0898.com/userfiles/file/20210701221240_5cir9f.pdfIn PDF document text
    • https://grandplaza.bg/uploads/assets/file/pididipawapetivusokov.pdfIn PDF document text
    • http://kryotherapie.net/neu/userfiles/file/xixerikutel.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/a2c8085abacd0cd74237b397438d2c04/33360073034.pdfIn PDF document text
    • https://kermoulin.com/userfiles/file/logipuzilijekanuti.pdfIn PDF document text
    • http://bukharasuwanee.com/sites/default/files/file/nigagoveboz.pdfIn PDF document text
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb320209a0e---56315182896.pdfIn PDF document text
    • https://aimhc.com/userfiles/file/posifodijadojupozata.pdfIn PDF document text
    • http://clinicoral.com/img/userfiles/files/pabamukujig.pdfIn PDF document text
    • http://rwdwebwebdesign.com/img-aim/files/24547819112.pdfIn PDF document text
    • https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/878a85d285229634d9c9dc4619995bbc/47782744511.pdfIn PDF document text
    • http://fashioncenterpoint.com/wp-content/plugins/super-forms/uploads/php/files/360fc7121f44e70556f6a50ab37a74f3/47742673700.pdfIn PDF document text
    • https://woodfur.in/userfiles/file/57694306881.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=representaci%C3%B3n+de+funciones+racionales+ejercicios+resueltos+pdfPDF 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_off000124e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124E0 18732 bytes
SHA-256: 2e80a1bfe844f3f6675eaed26bb1bd3c5091a9be19c22455ca679ac64622c78f
font_01_sfnt_off00015595.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15595 11024 bytes
SHA-256: 6d2004e3b5a44d8630d0eb8ab2b26ca74631ef571469f179b956e43ada1d0d1c
font_02_sfnt_off00016f13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16F13 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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