Malicious PDF — malware analysis report

Static analysis result for SHA-256 206ba5b0542f5052…

MALICIOUS

PDF

79.8 KB Created: 2021-09-05 22:31:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: faff254d118e1edfff75f6672217ef71 SHA-1: af15fff8d35a5fcee2078ff9862c3438738bcf7e SHA-256: 206ba5b0542f5052478dbfb008d3e0cad7a66f6ec8b958e8020e5bacb2978c32
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The file contains a link farm pointing to various domains, some of which are hosted on compromised WordPress sites, suggesting an attempt to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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 http://andreaslasnik.com/data/files/19681902850.pdf In PDF document text
    • http://cartopack.com/Images/file/66312600096.pdfIn PDF document text
    • https://orig-shop-gsm.ro/ckfinder/userfiles/files/dipegu.pdfIn PDF document text
    • http://alisawedding.com/upload/users/files/44771018831.pdfIn PDF document text
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608f43b5bce70---65707804721.pdfIn PDF document text
    • http://toyteepee.com/uploadfiles/file/210903132435905717yf1y69.pdfIn PDF document text
    • http://rybarict.cz/webpagebuilder/ckfinder/userfiles/files/vomuganudenasejemivovovuj.pdfIn PDF document text
    • http://pleasanthillpchurch.com/clients/5/55/55aa087cacc886b2254ddcc242c0699b/File/pugurafigapol.pdfIn PDF document text
    • http://securitydirect.it/wp-content/plugins/super-forms/uploads/php/files/c55dafd319482ca01a8432a360a60802/towubodiben.pdfIn PDF document text
    • https://www.hemoroidklinigi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073c390b7030---dezaturunapefufopofugawuf.pdfIn PDF document text
    • http://www.ambredore.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7f93a0c91e---30874409692.pdfIn PDF document text
    • http://fipjp.com/userfiles/file/36869891503.pdfIn PDF document text
    • http://www.tsahimmongol.com/uploads/images/files/76176878522.pdfIn PDF document text
    • https://autotrans911.com/thread/admin/uploads/file/vexunovumefe.pdfIn PDF document text
    • https://jagamimpi.com/contents//files/34487330959.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/160b41dd6b0feb---88505808690.pdfIn PDF document text
    • http://americansemitruckparts.com/d/files/34727902179.pdfIn PDF document text
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16086d673a7704---93404216237.pdfIn PDF document text
    • http://debden.org/userfiles/file/paniwifogelu.pdfIn PDF document text
    • http://degrossier.nl/uploads/file/wesebezininuzulagujefuwev.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609b7a7f0773a---loratoloxoniwukirizija.pdfIn PDF document text
    • https://ahreco.com/uploads/news_file/94959210384.pdfIn PDF document text
    • http://eurekaloggers1970.com/clients/a/a4/a4917853023b9a70bc4506ca58f09c65/File/kezurovefogakoseli.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=verbs+tenses+worksheetsPDF 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_off0000d4bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4BD 17976 bytes
SHA-256: 2cee36a9776a3b656489e6ab7a58bfc98b6af359941bf244b3af7bccab975dda
font_01_sfnt_off00010321.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10321 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011b38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B38 10192 bytes
SHA-256: 50a32e2fa79a8e4b51cf4ccca5143e4e37c6571c91ed2c3b3221a9249a72b329

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