Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffa829d12d74c073…

MALICIOUS

PDF

78.9 KB Created: 2021-06-10 07:00:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c25c7bffd167f729b885dacc5d77e18f SHA-1: 57bbf9c69dfd53b98126b52f184019592b9dee7d SHA-256: ffa829d12d74c073dc89afb63a994bb4ad5743db7d9119fe41b33cdad7d277f4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, appears to be a lure related to 'key of solomon spells pdf', likely intended to trick users into clicking the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://crysiq.ru/uplcv?utm_term=key+of+solomon+spells+pdf
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/16073b0d0e0fd4---donaze.pdf
    • http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098b6a6029d8---55050156581.pdf
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0becaa9a6d---36270963825.pdf
    • http://broadgatecapital.com/userfiles/file/nikalikutak.pdf
    • https://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/7b913dc990928fab1bc8be275f95aed7/77507845472.pdf
    • https://pima-alarms.net/slicice/file/60714449717.pdf
    • http://kondicionery-ivanteevka.ru/upload_picture/file/bonumawapevubezo.pdf
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/448529c0febd9c5e609417b9040286f2/jemerikikotix.pdf
    • https://laihouston.com/wp-content/plugins/super-forms/uploads/php/files/c632e0b40f95ef730d119b2e05b88c77/pubavanafabewuxisozerege.pdf
    • http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160b6fcf84a82f---61212771815.pdf
    • http://poltinik.ru/userfiles/file/ziwovirefije.pdf
    • https://skazkavdom.com/wp-content/plugins/super-forms/uploads/php/files/97eba6d83329d2cac88c7903d0286a28/pukedatamagu.pdf
    • http://banghaija.com/userfiles/file/wemurazepewofi.pdf
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/01699qcib0sforla5kvodjtha2/47902155238.pdf
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/nr59jjqqbcoshmfr9lkce95ja0/kefizoxowa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9dc.bin
38bae8317014b19eff6ed25841da2aadb6cc70dabd839c1166baf82f5e3b1e18		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9DC 4612 bytes
font_01_sfnt_off0000f97d.bin
a81dec8c49321444ebb6e54282f42318c829c2994063a4f88e2eaea0a6829fa5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF97D 11580 bytes
font_02_sfnt_off000120b8.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x120B8 4324 bytes

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