Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab0d24192f51074d…

MALICIOUS

PDF

86.9 KB Created: 2021-07-01 00:02:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 6fbad15fb79aa2bd435c04dc274ce585 SHA-1: e26444712abf06d3fcabe37c689dd61e73bb232d SHA-256: ab0d24192f51074dcdf7e27485b0d6603fd20bf95e99f9538f116814b97f2f96
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://cructi.ru/uplcv?utm_term=baked+cod+and+prawns+in+foil PDF link annotation
    • http://boothbayharborshipyard.com/userfiles/file/94097108025.pdfIn PDF document text
    • https://www.oneirishrover.com/wp-content/plugins/super-forms/uploads/php/files/c31800369c708963aa8489290daeb765/gujufezeg.pdfIn PDF document text
    • http://clasesholandes.com/userfiles/file/pugis.pdfIn PDF document text
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609f2e728952d---busowaxezugibinuv.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ee815db66a---jamukofaw.pdfIn PDF document text
    • https://presstone.hu/userfiles/file/53262662515.pdfIn PDF document text
    • http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab2c0f51449---zovumujoj.pdfIn PDF document text
    • https://flyingfish-stay.com/userfiles/file/relesatuzuruli.pdfIn PDF document text
    • https://www.duffylighting.com/wp-content/plugins/super-forms/uploads/php/files/5283e2f69152bfdbaa50646b2cd6548c/23028387907.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/2e6716ce2d3881099c226e28197bd594/webaxezijiwideve.pdfIn PDF document text
    • http://faurerom.com/userfiles/file/luleretivipojobovat.pdfIn PDF document text
    • http://korean-school.hu/hangul/userfiles/file/30284326596.pdfIn PDF document text
    • http://www.injamal.es/nueva/ckfinder/userfiles/files/97748559547.pdfIn PDF document text
    • https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/d51d766486b7d589a55c91be840f8392/66295157206.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af6f74121b7---7566463129.pdfIn PDF document text
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085dd8cc9bfd---boxozivovoxemiwes.pdfIn PDF document text
    • https://harrisitalia.it/uploads/file/zofivuwapiravojelezilek.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b634e05bb6---45294683630.pdfIn PDF document text
    • http://skncn.com/u/files/63535965222.pdfIn PDF document text
    • http://maslatalaia.com/userfiles/file/dowevebukoki.pdfIn PDF document text
    • https://beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/c1301f78770331e34238cc221477486f/95778929527.pdfIn PDF document text
    • http://x04ydivan.ru/userfiles/file/85555416619.pdfIn PDF document text
    • http://agapetown.net/ckfinder/userfiles/files/8368449489.pdfIn PDF document text
    • http://matstravel.ru/userfiles/file/43631016835.pdfIn PDF document text
    • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160c8cac910da2---80059780018.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_off0000ee55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE55 10744 bytes
SHA-256: c0e665100d5a1fe20c6d237e182cb0a634a96c10423693e8f01e53cb0e76ec12
font_01_sfnt_off0001072f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1072F 17384 bytes
SHA-256: 2a2274592e9f3716276078e76acd161267b02565a7dbeed3ab5b003ed3a045c7
font_02_sfnt_off000134ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134AD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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