Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5047bfc4cf6b29d…

MALICIOUS

PDF

90.1 KB Created: 2021-08-03 06:16:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: a32f8887a1d7907d72fdeecaa6048fba SHA-1: f0dc347e589d877aa884a6fe838babea0e37fa48 SHA-256: d5047bfc4cf6b29d904cc99d715bc3221962bef6da7600f109a3c4c3a733eea9
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected as a malicious PDF by ML classifiers and ClamAV, indicating it is likely a phishing or trojan delivery mechanism. It contains numerous links pointing to compromised websites and disposable hosting, suggesting an attempt to redirect users to malicious content. No scripts were extracted, but the PDF structure and link farms strongly suggest exploitation or redirection to a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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 https://nada70.org/userfiles/file/88041253521.pdf In PDF document text
    • http://lorofilmes.com/Uploads/ckfinder/userfiles/files/kifurufikejazisipozujom.pdfIn PDF document text
    • https://www.chablis-gautherin.com/ckfinder/userfiles/files/76321334477.pdfIn PDF document text
    • https://realestateconnect.us/wp-content/plugins/super-forms/uploads/php/files/tu2d9dafba37tdpakmascgrh53/44284053858.pdfIn PDF document text
    • https://nanyangtextile.com/userfiles/file/finekizezubuv.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/160749346a1cc5---bafobaraxolaxozi.pdfIn PDF document text
    • http://project-lovcen.me/userfiles/file/sarobomiwerinoxulesif.pdfIn PDF document text
    • http://uro-medical.pl/zdjecia/fotki/file/tefuxabofuxagona.pdfIn PDF document text
    • http://sitoad.com/bbqjoekey/files/202107222312343240.pdfIn PDF document text
    • https://space1500.com/wp-content/plugins/super-forms/uploads/php/files/e51c512402504ea4d9bff555070dc48b/jovezomatibisowodefomuzil.pdfIn PDF document text
    • https://mariellatriolo.it/public/file/pojiluwotusemakunura.pdfIn PDF document text
    • https://rabudiagnostic.com/userfiles/files/bitisetelalewete.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d78e9a9c0e9---19901652485.pdfIn PDF document text
    • http://cricalliance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160953771ed28d---fisoruduni.pdfIn PDF document text
    • http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16080b89b6712e---pebubizefit.pdfIn PDF document text
    • http://losmarinoslanzarote.com/marinarubicon/admin/file/dotuwexikaxikig.pdfIn PDF document text
    • https://vetranhtuongmamnon.vn/wp-content/plugins/super-forms/uploads/php/files/tqboij9n0g3q9auhqght206qig/79115078989.pdfIn PDF document text
    • https://kimtuong.vn/isc/public/files/fckupload/file/satanojiz.pdfIn PDF document text
    • https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/97q0rdu0114k7qn2hp1mps54bd/13440046141.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081dc0dc6320---pifekevez.pdfIn PDF document text
    • http://stroisvias.ru/userfiles/file/32190434682.pdfIn PDF document text
    • http://dbjhockeytournament.com/clients/f/f9/f9ff496842c877cbb4522510b668f2a2/File/60560675939.pdfIn PDF document text
    • https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/e6875b0325dd4ba6148f41da7f0d62fb/28871627956.pdfIn PDF document text
    • https://felix-schulze.biz/wp-content/plugins/super-forms/uploads/php/files/jff3qifm7us0r919muvuct2jpb/75833270767.pdfIn PDF document text
    • http://haiphongcontest.com/images/files/94024445706.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=flexible+working+hours+sample+letterPDF 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_off0000fae7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE7 11196 bytes
SHA-256: 02b0de010219ef2eec0e6c2f3d7422ea32cdc089414dbaceb043e1dc034c0071
font_01_sfnt_off000114bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114BF 16864 bytes
SHA-256: 7d0b42374b5ac72c197298eb971f9274ba04665700b9f92d938bdba5ec2fb21e
font_02_sfnt_off0001404a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1404A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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