Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bcee4fd4633aec7…

MALICIOUS

PDF

93.3 KB Created: 2021-07-04 01:44:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 6daef934c437dfa775f9e1b7dd82f7c0 SHA-1: 0872d53f1748a72c904acd7a15aed7e65d50cfca SHA-256: 2bcee4fd4633aec781a4fa0ee048c366e4df54f0968549dfe6b5b2e66cb1c1e4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as a malicious PDF by ClamAV and an ML classifier. It contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a phishing or scam lure. The presence of embedded URLs and the PDF structure indicate an attempt to redirect users to malicious sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9820

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://garglob.ru/uplcv?utm_term=the+lottery+critical+analysis PDF link annotation
    • https://cvenhancer.com/wp-content/plugins/super-forms/uploads/php/files/c99d3eadbf8581fcf6b9894961c2a501/77368786324.pdfIn PDF document text
    • https://loyallcanada.ca/editor_files/file/19585139614.pdfIn PDF document text
    • http://www.socalgreatwhite.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607098d544631---vabaked.pdfIn PDF document text
    • https://gadd-asso.org/userfiles/file/2792100574.pdfIn PDF document text
    • http://harissarantis.com/userfiles/files/26977824655.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fa015e74f8---ligevirajaratuxefepopov.pdfIn PDF document text
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160d44725695ae---19633852066.pdfIn PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/cfb001499343e27b371414675266dd31/31062017679.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/16085dd13d6348---96645087516.pdfIn PDF document text
    • https://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16078a44c44efe---bazajofewarejekujoxezokex.pdfIn PDF document text
    • http://ash-graphy.com/userfiles/file/lasijovovesixoxuposegefit.pdfIn PDF document text
    • http://edanieltour.com/FileData/ckfinder/files/20210629_0C598587B239976F.pdfIn PDF document text
    • https://www.erenang.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085bf8633d15---42824858032.pdfIn PDF document text
    • http://www.supercarrentalsofmiami.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2b5128cf8f---xuzojimodezipanezikin.pdfIn PDF document text
    • https://cornerstonelaw.eu/userfiles//file/pikow.pdfIn PDF document text
    • http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16084ce3203ebe---90151753894.pdfIn PDF document text
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b9a2fa8a3c---rezufirabivufababo.pdfIn PDF document text
    • http://brainerdhs71.com/clients/0/08/084bd9d902c6a1e3ee48703551c87841/File/mevuzetupoxotovosavozip.pdfIn PDF document text
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/69ab20dab54b9f1e82db69bfb9392705/sopitikudixun.pdfIn PDF document text
    • http://prof-cosmetics.com/upload/files/12983752636.pdfIn PDF document text
    • https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f3ad066ea0---kesefowijenajakiviko.pdfIn PDF document text
    • https://vegas-shop.net/uploads/files/fejufijus.pdfIn PDF document text
    • https://bandai-k.com/userfiles/file/67190850008.pdfIn PDF document text
    • https://anitacalderon.com/ckfinder/userfiles/files/sebijilil.pdfIn PDF document text
    • http://symbioticlifetech.org/attfile/fckimg/file///2021050711122_615684438.pdfIn PDF document text
    • http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/160a85d17551c4---23572305166.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_off00010c42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C42 10404 bytes
SHA-256: 0f8732c9a9c8b055bfef5bbe0e03a28c36a55e638d5a5deb749fa5d3d5a96b80
font_01_sfnt_off000123d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123D2 17304 bytes
SHA-256: 36fb992b472949c1d18ec1108fe5eb3c78d40778fef2a5f5aee97fc93fc28a64
font_02_sfnt_off000150e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x150E6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1