Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c7ce059e29bd6fe…

MALICIOUS

PDF

78.8 KB Created: 2021-09-06 09:12:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 7a67c3611011f309f42562b47c25872f SHA-1: 609bed7860e5c60d9be1244d224d4a80018f0167 SHA-256: 0c7ce059e29bd6feed3dfba290514c4ee0c25d4c36532d215ed72ac4709a81f7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate the document functions as a link farm, directing users to compromised WordPress upload directories. These links likely serve as a lure to download further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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 http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b0a886c4a35---sezixusedadisusoli.pdf In PDF document text
    • http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d0519771dfc---5069774005.pdfIn PDF document text
    • https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/16088834f5a75e---xuxafeduvawijezaxafit.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/16121a7ae0eb7b---kipusoraxajafuxobel.pdfIn PDF document text
    • https://ols.lighting/wp-content/plugins/super-forms/uploads/php/files/a704b0bad05786263dc86f00116df7e0/35732542171.pdfIn PDF document text
    • https://ymvii.com/admin/upload/files/11473673389.pdfIn PDF document text
    • http://www.advokat.com/app/webroot/img/fck/file/gewikuzizudozakalumet.pdfIn PDF document text
    • https://htchninc.com/d/files/salokapufap.pdfIn PDF document text
    • https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/69aaecac00e1d225b296643f8bf05242/1866637796.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/160a391a510401---dapulegibimisunifedow.pdfIn PDF document text
    • http://vudafrique.com/wp-content/plugins/super-forms/uploads/php/files/58857a185a2c0b666982578e4db1e4ee/49718816180.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/fafedd6886e904c4642477eb4b65163b/86462996993.pdfIn PDF document text
    • http://sl-light.ru/design/img/upload/file/nifalorokuvu.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160aba0626a7e1---54546034952.pdfIn PDF document text
    • https://hosvagyok.hu/userfiles/file/dozagadopiwofep.pdfIn PDF document text
    • http://sevimticaret.net/userfiles/file/83145008879.pdfIn PDF document text
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/9e55d256eda75fd97a7f49f4cdff2e7e/budalilibuxukagomero.pdfIn PDF document text
    • http://asirakademi.com/resimler/files/35099426197.pdfIn PDF document text
    • https://suativisamsungtaihanoi.net/upload/files/kokazi.pdfIn PDF document text
    • https://hobbes-group.com/upload/files/14019022111.pdfIn PDF document text
    • https://sgdivorcelawyers.com/wp-content/plugins/super-forms/uploads/php/files/03706822690aa8ed36dcb46731513388/83418109586.pdfIn PDF document text
    • https://wic-net.com/userfiles/file/gobesemeniziwu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=gestes+et+postures+au+travail+pdfPDF 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_off0000d0e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0E0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e8f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F2 17940 bytes
SHA-256: fcdc1d1948fd2e7a3bde3a1195d143e10ea0d652b32dfd2fcfe3d0e1d330d6cf
font_02_sfnt_off000115a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115A7 10592 bytes
SHA-256: 7ce6ad0f5397a4abf937c2ce875ae2d8ad4912bbae98b6efe2955287bb99808b