Malicious PDF — malware analysis report

Static analysis result for SHA-256 14f8e309279783dc…

MALICIOUS

PDF

89.6 KB Created: 2021-07-25 00:53:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 6529ce2035ea93d16f508de60942476e SHA-1: 9eb4906697c5e77f57925b30a21dc1d625d2e46b SHA-256: 14f8e309279783dc55117b344e31edeb8387f2bf4d8824d7fa9c1421237f1d31
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, 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. No scripts were extracted, but the structure and embedded URLs point towards a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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://atolab.it/wp-content/plugins/super-forms/uploads/php/files/b32aada32f988e0823280ba0c37589c0/teduvu.pdf In PDF document text
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160af7c2adae95---vajevoweregus.pdfIn PDF document text
    • http://collegium-connect.nl/ckupload/files/91256018642.pdfIn PDF document text
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/d135aadaf089197d11d6d47fce72e607/temutitanuwikig.pdfIn PDF document text
    • http://stadiumhighschoolclassof1965.com/clients/0/00/0080f9a3d0f10e930bcfc39f0a940e94/File/68801403784.pdfIn PDF document text
    • https://lexcochoralsoc.org/demo/lccs/beta/userfiles/files/77814769736.pdfIn PDF document text
    • http://alpha-cp.com/userfiles/file/gopoxi.pdfIn PDF document text
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae90d47c9c8---82352355316.pdfIn PDF document text
    • http://agcslohian.com/userfiles/file/854060042.pdfIn PDF document text
    • https://mldom.xyz/web/img/podborky/files/xoxeb.pdfIn PDF document text
    • https://bikidi.com/UpFiles/WebEditorFiles/file/vuralivob.pdfIn PDF document text
    • http://nowyhotelik.pl/userfiles/file/mijego.pdfIn PDF document text
    • http://hollywoodterrace.org/clients/863344/File/dojumabu.pdfIn PDF document text
    • http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/4749fdf48629c785138eef74c235dc7d/53932114169.pdfIn PDF document text
    • https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/l9cf53k5beumsalg973qosshdb/kopabosazirokefobeliv.pdfIn PDF document text
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/9q5msdm6avo29kck8vfok9ktl7/60696114877.pdfIn PDF document text
    • http://lws-realestate.com/userfiles/files/56407495585.pdfIn PDF document text
    • https://sheenabusesandcoaches.com/userfiles/file/zonefusamudejikipi.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609cfe3831927---wadabifedem.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160c2f92be9a71---legexogovofig.pdfIn PDF document text
    • http://veterina-hrib.cz/user-uploads/files/60762864200.pdfIn PDF document text
    • http://imssp.by/data/images/fxeditor/file/12482756688.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=como+hacer+una+hoja+de+vida+ejemplos+colombiaPDF 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_off0000f786.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF786 17888 bytes
SHA-256: 8f433be7e136336868396dce41e52ba8669e9d1c42484192ef3f4aa30fa86302
font_01_sfnt_off00012531.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12531 11148 bytes
SHA-256: e628a4504f29ea20a30821484dc6d6277cc8010ef2650f0c276620e62023d4a5
font_02_sfnt_off00013ec4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EC4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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