Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce483732f6a24ca4…

MALICIOUS

PDF

81.5 KB Created: 2021-07-29 12:55:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 068c06d07a002644ed8174d4c087f27b SHA-1: a647cf49f936221ac6197cbd5c9964d7deca5f3d SHA-256: ce483732f6a24ca4f5852ab4e5bff621f6840bcd7b991c4c56ececd93ebbb37e
156 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to various websites, including those hosted on compromised CMS platforms. This suggests an attempt to lure users to potentially malicious sites for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/096b462b3640fcf50711a84a609ee5b0/77702867900.pdf In PDF document text
    • http://bwc.lt/i/nafox.pdfIn PDF document text
    • http://igigeothermal.jp/userfiles/file/91972883737.pdfIn PDF document text
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/e20de89c1d34871bdb6040269884d445/tubufunifuxexe.pdfIn PDF document text
    • http://www.supercarrentalsofmiami.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f2b6b90696---lefanisuvomitugajoti.pdfIn PDF document text
    • http://auburn-properties.com/userfiles/files/71859063693.pdfIn PDF document text
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/3ada3ac08ee2e8bcd03220902bd83325/sasabumukivukalamena.pdfIn PDF document text
    • http://abpaluso.com/upload/file/detawifubonegosajinuzeris.pdfIn PDF document text
    • https://atlastoursntravels.com/userfiles/file/pilokepofodusudurakututa.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160922a2254d32---nadifamiwuf.pdfIn PDF document text
    • http://nsdadventist.org/FCKData/file/94334381120.pdfIn PDF document text
    • https://yastudio.net/wp-content/plugins/super-forms/uploads/php/files/35734e8c3d108700ccc0ae9c6f5f94d9/68309492435.pdfIn PDF document text
    • https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/11dbf3e5ede421eaaaecc24b50a02fdc/toxenobuwozalibuxuker.pdfIn PDF document text
    • https://rubyyadav.com/nbloom/fckuploads/file/95872946205.pdfIn PDF document text
    • http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16078f1798c202---wotewaxijebimenevakir.pdfIn PDF document text
    • http://crescentcarpets.com/userfiles/file/nigebebezir.pdfIn PDF document text
    • https://editionsitaliques.com/userfiles/file/7531280551.pdfIn PDF document text
    • https://nutricionintravenosa.com/wp-content/plugins/super-forms/uploads/php/files/4062c8f5c44c52a61cbb302019f81555/disujajuzutixoxevifezebiv.pdfIn PDF document text
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c2c563847e9---dexodadamowinikusiwef.pdfIn PDF document text
    • https://projetounificado.com/uploads/files/36709270591.pdfIn PDF document text
    • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a981c069dc4---witiwezojekitawepa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=ge+remote+control+codes+for+insignia+tvPDF 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_off0000dbd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBD9 16220 bytes
SHA-256: eec6db0b81787041ea6a0fe275eb165023702fcb1d2f8478c1c4e9436570cdae
font_01_sfnt_off000105f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105F5 10924 bytes
SHA-256: 40103c26ff77b479ec466843a155549502bc1c487fe495cd87e61b0a34d6b7be
font_02_sfnt_off00011f1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F1A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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