Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c365f94262911ce…

MALICIOUS

PDF

71.9 KB Created: 2021-09-23 10:34:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 285ea1cd3000428fd01edfbefe023f6d SHA-1: bb0bda1a41903b87613a8024798c0a743f8bd6e0 SHA-256: 5c365f94262911ce91293766d0fb209131dd192c8bf41840cccd90f13a96e4b3
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external URIs, many of which are identified as link farms pointing to disposable or compromised hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution by redirecting users to malicious sites. The embedded JavaScript is a common technique for initiating malicious actions within PDF documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://smidgel.ru/uplcv?utm_term=whole+lotta+love+1997 PDF link annotation
    • http://sistarelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/bipesemogigoxejupufag.pdfIn PDF document text
    • https://balticstroy.com/uploads/files/96095440782.pdfIn PDF document text
    • https://mi-stores.com/basketballtotaal/images/editor/file/48165455955.pdfIn PDF document text
    • https://www.vita-organic.eu/admin/ckfinder/userfiles/files/wefanujoxodoluwo.pdfIn PDF document text
    • https://houstoncoinshow.org/FCKeditor/file/37418044250.pdfIn PDF document text
    • https://organicearthfiji.com/documents/file/19507766961.pdfIn PDF document text
    • http://to-kajihan.net/js/upload/files/23280927623.pdfIn PDF document text
    • http://archidaldegan.eu/userfiles/files/89079741888.pdfIn PDF document text
    • http://alvitraders.com/files/wajulufow.pdfIn PDF document text
    • http://studioambienteterritorio.it/userfiles/files/80519972439.pdfIn PDF document text
    • https://www.nitdgp.ac.in/uploads/userfiles/files/90192891568.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/16146350c37d48---risazapivejozaziwizoridu.pdfIn PDF document text
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/50c4f702ba60485adb5c9cd18bd24799/fegovire.pdfIn PDF document text
    • http://lavalnerina.it/userfiles/file/mezesabolesuzuko.pdfIn PDF document text
    • https://gelblighting.com/userfiles/files/11514026567.pdfIn PDF document text
    • https://pasarant0g3l-turbo-h1t.com/contents/files/neleturebafawaxodilobak.pdfIn PDF document text
    • http://baominhlabors.com/upload/files/25107925732.pdfIn PDF document text
    • http://buyyoutubesubscribers.com/ci/userfiles/files/62854589297.pdfIn PDF document text
    • http://bowie.abwingsmd.com/uploads/files/43666377830.pdfIn PDF document text
    • https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/179824122a36e4cba258802816441aeb/xakonoroxoxawuf.pdfIn PDF document text
    • http://hexindechem.com/upload/files/jumuzolenelusesufapejixaj.pdfIn PDF document text
    • http://phantasos.org/userfiles/file/27723552035.pdfIn PDF document text
    • 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_off0000b68a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB68A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ce9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE9C 17084 bytes
SHA-256: 189ac470be3754a99b3473ebae1ef761f3fe74331d2bca2fe4ad6220cf850ac3
font_02_sfnt_off0000faf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAF3 10068 bytes
SHA-256: 0b20e213beda726dfdc7ee0d77e0b7ceccc1a38b6bb94cc1bb60cb3ac8a3b554

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