Malicious PDF — malware analysis report

Static analysis result for SHA-256 a70149f0004e663f…

MALICIOUS

PDF

100.9 KB Created: 2021-07-26 01:37:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 149ccecf4f1a448cd8d08e525c88236e SHA-1: e4077b72a43aa46a01d40ada8397b794d30785e2 SHA-256: a70149f0004e663f3d32c138c961b675e7ab5bad76188f58f90c5b4e977b917e
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to compromised WordPress sites, likely intended to trick users into downloading a password-protected archive. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the structure and heuristics suggest a phishing or credential harvesting attempt, potentially leading to malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d6cc53d24db---39224374413.pdf In PDF document text
    • https://canadianrelocation.net/wp-content/plugins/formcraft/file-upload/server/content/files/160f617fd963d3---waxarifubopi.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7ccdd879e0---mizemokoxolurofuzozomu.pdfIn PDF document text
    • https://roshindelivery.ae/userfiles/files/49587807851.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090a2f0c3577---xomaluwaguna.pdfIn PDF document text
    • https://www.asahinafunnels.com/wp-content/plugins/super-forms/uploads/php/files/lrdiah4r46odcmapkkaq7hc2d6/48192820072.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606ee52ac2c14---52491754293.pdfIn PDF document text
    • https://baileyelectrical.services/wp-content/plugins/super-forms/uploads/php/files/l7a3jf6dbeiafrmsb7mquico2r/jupevurumipunasar.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c2c8700485e---8088693459.pdfIn PDF document text
    • https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/5a882e4972692ef215b5a17f523c9346/39884511122.pdfIn PDF document text
    • http://residenceraffaellotorino.com/userfiles/files/86315187570.pdfIn PDF document text
    • http://africanhairbraidingsalon.com/userfiles/file/welozu.pdfIn PDF document text
    • http://benjamin1908.com/clients/f/f4/f4560e3fe432b95d15e234f900dec36a/File/98764726022.pdfIn PDF document text
    • https://biogenetixpharma.com/ci/userfiles/files/99579919072.pdfIn PDF document text
    • http://winkeleninzundert.nl/uploadimages/files/tasakuganoxepi.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/1609461c94156b---27636735623.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/2ad890dfe2a5b4e4f84e3361212fc553/dizumokomukolis.pdfIn PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/472f11dd9f48e673b2acb40b2c005416/69024515646.pdfIn PDF document text
    • http://manleyboone.com/clients/3/3d/3dd19be848c73b0ce3a0430f7fd535f3/File/35148116493.pdfIn PDF document text
    • http://www.ferm-matic.fr/upload/file/27716441412.pdfIn PDF document text
    • https://mariapolis.net/ckfinder/userfiles/files/47826333099.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=hybrid+animals+game+online+unblockedPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011a36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A36 18628 bytes
SHA-256: 76a27aa2dd695bc945279fe862ee044c5bb833ba8845286352f7c01fd156e0b5
font_01_sfnt_off00014b92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B92 1800 bytes
SHA-256: cb2d23ba59d6fab898ac4861c5a4e22643c1fe5c039578fe3c63b16aaee6607f
font_02_sfnt_off00015409.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15409 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00016c20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16C20 11052 bytes
SHA-256: 0b45599b87054b45414278cfbee69eda098759ccceef6954a35b3f18e496d472

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