Malicious PDF — malware analysis report

Static analysis result for SHA-256 2edad66b189c8ad6…

MALICIOUS

PDF

101.8 KB Created: 2021-06-28 12:08:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: d0419935dfeff5c83de6cbb344057637 SHA-1: a3c111b64348ad3a1e537df82fc15a13ccafc0f7 SHA-256: 2edad66b189c8ad6f64b95abb4c13cce87b33ee019042bcfe6b7979f0bfec03e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by ClamAV as 'Pdf.Phishing.Trojan' and a machine learning classifier indicated a high probability of maliciousness. It contains numerous embedded URLs, many of which point to compromised WordPress sites, suggesting a link farm or distribution point for malicious content. The presence of these links and the trojan detection strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

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://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086af0db1995---tasuxefezoju.pdf In PDF document text
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609d329c27fed---futopejizufiwevivife.pdfIn PDF document text
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608caffb019e1---buninub.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160801a9bc5ff3---28115268074.pdfIn PDF document text
    • https://harrisitalia.it/uploads/file/vanonazobepotif.pdfIn PDF document text
    • http://championsview.net/userimages/11652147060.pdfIn PDF document text
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1a37d27015---narusupabizufoxe.pdfIn PDF document text
    • http://rapabzenec.cz/obrazky/files/gumuvamas.pdfIn PDF document text
    • http://chieucoingason.vn/files/giposavesa.pdfIn PDF document text
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/6kgsookc8ko43g248mq65s9n86/3627035197.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085627d13726---59372900959.pdfIn PDF document text
    • http://gadkowski.pl/repository/filemanager/file/59200859293.pdfIn PDF document text
    • http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090071100d1a---41853968048.pdfIn PDF document text
    • https://ajansnigde.com/resimler/files/49305065138.pdfIn PDF document text
    • http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1606de66ab6de9---59698458504.pdfIn PDF document text
    • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/op832k7pl2lqjfos7uaaodjm9i/besaxazowikafaja.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ad8e323d11b---82702100283.pdfIn PDF document text
    • http://ambulatorioveterinariorigolon.eu/userfiles/files/ledekariragipowexupawemid.pdfIn PDF document text
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/eb56b2d40ad8e4808b7983f676fa8a61/bumoxufodikomebiremidagox.pdfIn PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c65fe85bcf---jugixebewudazudupigusuv.pdfIn PDF document text
    • http://kino-profi.com/wp-content/plugins/super-forms/uploads/php/files/cea5261cf20d096d6ba5d47106440a26/zalaf.pdfIn PDF document text
    • https://majorsagilekvaros.hu/uploads/file/80491980348.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/1608149471b726---powumeturobosofimi.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a9dacd50077---telelofa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=industrialisation+by+invitationPDF 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_off00012c5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C5F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00014471.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14471 17528 bytes
SHA-256: 3d59b17af611a1a2148c23b631ec4a961afdca5a33f035df557d96ba51c46611
font_02_sfnt_off00017226.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17226 10480 bytes
SHA-256: f1c410809fcf1a8a09b78de3d98bd145350e115b25516349e39ed2ef5655fab4

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