Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a30db12d5e0bbff…

MALICIOUS

PDF

86.7 KB Created: 2021-09-18 02:13:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 92069bdd4aa402b1a8d02856e29a3e96 SHA-1: 211f25faee2571eb7a3ebb4321371409a9fef37d SHA-256: 9a30db12d5e0bbff920d926e130f8700c51cf56145555e5cca9129532c7daa3c
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded JavaScript and numerous external URIs, many of which point to disposable hosting and are part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. The embedded JavaScript is likely used to facilitate the download or execution of a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://garglob.ru/uplcv?utm_term=cities+of+sigmar+battletome+pdf+download PDF link annotation
    • http://familiegravesen.dk/userfiles/file/ganareguwatebosejire.pdfIn PDF document text
    • http://immobilier-valence-agen.com/userfiles/file/87120802496.pdfIn PDF document text
    • https://marblo.com/app/webroot/img/files/57655208466.pdfIn PDF document text
    • http://xn--80aatg4aaaddkhfhbf3evf.xn--p1ai/ckfinder/userfiles/files/zuposabajijota.pdfIn PDF document text
    • https://smsenerji.com/resimler/files/41531173861.pdfIn PDF document text
    • http://druckmaschinenservice.com/uploads/fce/files/bapojitexajewotupigi.pdfIn PDF document text
    • http://studiotecnicolamanna.com/userfiles/files/62331956285.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/16134614cb2573---4325649051.pdfIn PDF document text
    • https://gulfcans.com/home/madarmun/public_html/gulfcans/images/bulk_images/files/67122701355.pdfIn PDF document text
    • http://madinaboys.com/easydo%20v2.00/files/uploads/1558094729.pdfIn PDF document text
    • http://jadeite.ru/images/file/mojizibanogikop.pdfIn PDF document text
    • https://sitarasign.ir/data/file/22970909787.pdfIn PDF document text
    • http://alarcon-v.com/editor_upload_image/file/nudarexepogitu.pdfIn PDF document text
    • https://panoramamall.bg/ckeditor/ckfinder/userfiles/files/vowaxatenibuzurimolano.pdfIn PDF document text
    • https://curvy.tw/upload/files/75717501377.pdfIn PDF document text
    • https://advance-pack.com/editor_upload/file/kagiva.pdfIn PDF document text
    • http://instit.ac/ckfinder/userfiles/files/15567260626.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/849a38ec139735ca55ad9efd1347ad03/rodusodukupedumirafuvamaz.pdfIn PDF document text
    • http://lanaecoloridabruzzo.it/userfiles/file/fuwawitizomepipati.pdfIn PDF document text
    • http://www.phsdcenter.com/temp/js/ckfinder/userfiles/files/varaxav.pdfIn PDF document text
    • http://farmaciacogliate.it/userfiles/files/lunulapivef.pdfIn PDF document text
    • https://gelblighting.com/userfiles/files/41018086441.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/1613728be699ff---rivodajipiwulafefexojigu.pdfIn PDF document text
    • https://flomogroup.com/upload/files/sotozinekajuse.pdfIn PDF document text
    • https://madspot.dk/ckfinder/userfiles/files/nakir.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_off0000ec7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC7E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010490.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10490 17920 bytes
SHA-256: e725397e940cb02d95ec3c8b01d309da197bf6085eb4324bc90fbc7606044f01
font_02_sfnt_off000132f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132F6 11096 bytes
SHA-256: a6724f509ba772c452c9b610d4115df0b323d2bb8518868ffabea2cd1eadc0b6