Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cc58c7b944548d4…

MALICIOUS

PDF

110.4 KB Created: 2021-06-28 07:25:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 02199a5ff1a3571d6ea8afd7b0320b88 SHA-1: 2937e57226ec9e5a95a5153cbf21e6cdc14e08e8 SHA-256: 0cc58c7b944548d4e0318802c6f37640153a23dafc23a2cb4d0de3ace6f206ff
156 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a phishing or malware distribution campaign. The PDF structure itself appears to be a link farm, designed to redirect users to potentially harmful external URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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://queure.ru/uplcv?utm_term=how+many+cards+in+a+bridge+deck PDF link annotation
    • https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/u0dqfhnpb41olqhgbksds9r7mr/dolufaxifusoju.pdfIn PDF document text
    • https://dynasty888.com/image/files/20210529_010842.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fb706262dc---jofaxobisirunowubezo.pdfIn PDF document text
    • https://grafitpoint.ru/wp-content/plugins/super-forms/uploads/php/files/a692a90e60582892967217356131255a/62874084437.pdfIn PDF document text
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a8fe57c4c82---xizasovabedotewuto.pdfIn PDF document text
    • http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606d0c6880885---31000697716.pdfIn PDF document text
    • http://ranaghatpchsschool.org/userfiles/file/90842470187.pdfIn PDF document text
    • https://dhesient.com/media/95860035656.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/90259725451.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f82177abd4---bumuxokakupuzokil.pdfIn PDF document text
    • https://www.straightmyteeth.com/wp-content/plugins/super-forms/uploads/php/files/9d8c337ea5fb0fcae47f4aae335fb636/nurakinubu.pdfIn PDF document text
    • https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b2f1b31407d---xoragefesasifew.pdfIn PDF document text
    • http://foto-klub.dk/userfiles/file/tutoriloloz.pdfIn PDF document text
    • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/fbb2714642bd1a7ef610a16512da22af/lavakimakil.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/ff54d372d8ee45e56895cfa1fb3a5ba5/99714182163.pdfIn PDF document text
    • https://leganordavigliana.it/uploads/file/vokexagexaji.pdfIn PDF document text
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/519d036f7bb9fbab71fb29283e809481/47684085446.pdfIn PDF document text
    • http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606c6c7630475---kepunoziromuruwifobenefu.pdfIn PDF document text
    • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160844a5a49bc2---nedixevovo.pdfIn PDF document text
    • http://skrabl.pl/www/rpbd/fck/file/31299177877.pdfIn PDF document text
    • https://www.cittadelmiele.it/wp-content/plugins/super-forms/uploads/php/files/72bd00724a13ef63d9511ec57201cbe4/tabafogesivax.pdfIn PDF document text
    • https://estigotours.com/wp-content/plugins/super-forms/uploads/php/files/92a5066a64c19459129e279d5148311a/99235618803.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_off000150df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x150DF 10992 bytes
SHA-256: 33478d20ceec892576c1d61f107012c57b5a2b0be517ee4c2a1eac9274e78244
font_01_sfnt_off00016a3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16A3C 16420 bytes
SHA-256: baa8b6949428e9465bb2921641a861748cc802af14dc4568596d6e02e650b15e
font_02_sfnt_off0001947f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1947F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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