Malicious PDF — malware analysis report

Static analysis result for SHA-256 c614aac20c7d7707…

MALICIOUS

PDF

91.6 KB Created: 2021-07-05 03:20:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: f37feb4ce55e18322ed246f619cdd9cf SHA-1: 22c9b52a3f196f2122ca3a33de9f56a22c122520 SHA-256: c614aac20c7d770769ef495ef9c371eb8b52f8d1f6f51d5d52ad01d062187c68
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. The 'SE_ADVANCE_FEE_SCAM_LURE' heuristic indicates the document's content is designed to trick users into believing they are receiving a prize or parcel, which is a common advance-fee fraud tactic. The numerous embedded URLs pointing to compromised WordPress sites and disposable hosting suggest a link farm designed to distribute malicious content, likely leading to further stages of infection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9937

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/7a27a08ce30282498c698cef70275a60/99690295160.pdf In PDF document text
    • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/2856c51a356d7c697bb9efb460d45a2c/lemaxefila.pdfIn PDF document text
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/e91fb7d6f7e33f9a1103c103ac7bd064/68876930916.pdfIn PDF document text
    • https://bechtoldpaving.com/wp-content/plugins/super-forms/uploads/php/files/4db3cd664007892f77b9000b46441f44/rusim.pdfIn PDF document text
    • http://lifemartrealestateconnect.com/wp-content/plugins/super-forms/uploads/php/files/8k104l24jpj3buu054ghekhhp6/pukedovalowujodu.pdfIn PDF document text
    • http://blog.crowdly.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f5932746b8---zabopep.pdfIn PDF document text
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16084ae76805d8---regazamaduv.pdfIn PDF document text
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607e297f04260---kiregidubatidomafobal.pdfIn PDF document text
    • http://www.cddfct.com/up_files/file/wupulen.pdfIn PDF document text
    • http://1970fchs50thclassreunion.com/clients/1/19/19770213778af891f1b13fa25f964f50/File/35487447690.pdfIn PDF document text
    • http://longarmquiltacademy.net/fckeditor/userfiles/file/33653041031.pdfIn PDF document text
    • https://erinmillssmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/e2n6eqcmm05bi1egrbm6sjk040/10474473942.pdfIn PDF document text
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0723509e39---17830525207.pdfIn PDF document text
    • https://0a3exp.com/upfiles/editor/files/48691271623.pdfIn PDF document text
    • https://seikai.jp/free_images/files/64438813674.pdfIn PDF document text
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093354e125a6---pobezodawononovazulopu.pdfIn PDF document text
    • https://anthonygillant.com/userfiles/file/59873627626.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/160aff80d37794---xewetizakegiteduzo.pdfIn PDF document text
    • http://atol-res.pl/uploads/file/43227498412.pdfIn PDF document text
    • http://dirabrealtors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086e52ca2dad---jutapanapuzibupovizamuku.pdfIn PDF document text
    • https://hunde-katzen.at/soubory/jiduxotunad.pdfIn PDF document text
    • https://www.oasipizza.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c6c0c763e12---92472735453.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16071796a173ab---purebo.pdfIn PDF document text
    • https://cgeminfos.ma/upload/file/44691734881.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/80998899387.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=even+more+true+stories+pdf+free+downloadPDF 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_off000102cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102CF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011ae6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AE6 10892 bytes
SHA-256: a1b175621780592f38348e608bdfa6c2df481f30b1de252beaf643b513a72f03
font_02_sfnt_off00013420.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13420 17192 bytes
SHA-256: fa67ffc4f9deaddbeede9b5851a14af853a8e467fff3420c46e9f66d7d214ced

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