Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c7676e3a0e56049…

MALICIOUS

PDF

78.9 KB Created: 2021-08-02 05:47:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: e23c092a6e1c54215abf2eea45e4d5ba SHA-1: 98e2bc927d235171405d0b19625db55e7508b646 SHA-256: 9c7676e3a0e56049ff78ae7c36087ad7b40b355ee6cfb6cd062be9669ab7bb63
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links, many pointing to compromised WordPress sites, suggesting it's designed to lure users to malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for link farms, further supporting a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7188

Heuristics 5

  • 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
  • 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://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/uoa909qcps7adaa0nlagi2vv22/90237337704.pdf In PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/160b9953d17709---lotemubutepetu.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f5681229f3b---79843096714.pdfIn PDF document text
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/62b962554a9ae7ebc4639599d5fbb18c/36750955576.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b2dd56c645c---53765188415.pdfIn PDF document text
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1606c937c24da4---regifomirexizasesuzisij.pdfIn PDF document text
    • https://rfcorporation.net/wp-content/plugins/super-forms/uploads/php/files/8b035b086fd555b9f78df5159a9b6460/rinipixakonikuvamum.pdfIn PDF document text
    • http://wmhsclassof1977.com/clients/34196/File/82662201643.pdfIn PDF document text
    • http://notariocprietoa.com/notaria/documentos/files/rijebuwisizumi.pdfIn PDF document text
    • https://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/ig565f8as0cd88iqg555u617d2/gajulupenijugoroboxuf.pdfIn PDF document text
    • https://www.cfo-search.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b716a8dee5---60657791900.pdfIn PDF document text
    • http://unternehmensberatung-hegenbarth.de/userfiles/file/94459063601.pdfIn PDF document text
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/7c6aa9e9e44d09dad8963851350e466a/21041635352.pdfIn PDF document text
    • http://www.anclupnapoli.it/userfiles/file/zopanojuzuxiravazexov.pdfIn PDF document text
    • https://ntpuvoice.com/ckfinder/userfiles/files/32914640784.pdfIn PDF document text
    • http://ajivikafinance.com/userfiles/file/bisokegobupuxavijinojaxod.pdfIn PDF document text
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/hisr204utt0gh33t4ukovqfk1q/fufeweximotedopade.pdfIn PDF document text
    • http://pr-jam.com/ckfinder/userfiles/files/mofevobegokowuligikosi.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/6d56492964f7f50723b67508f8b4643e/mewinuwutis.pdfIn PDF document text
    • https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/pahso9nd7qa8v02il1tj0b7c4c/paxivevekodipabafivopedor.pdfIn PDF document text
    • https://www.federatedlighting.com/wp-content/plugins/super-forms/uploads/php/files/08fd422a3adaccc9bb7c15727c6c7336/satanujubogovaza.pdfIn PDF document text
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/3uhmudqvv4h8vmhgi2j477jo0u/kunebi.pdfIn PDF document text
    • https://fullgame.hu/uploads/files/dopeto.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=icloud+unlock+free+tool+downloadPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010b2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B2E 27144 bytes
SHA-256: 6588b4b8ccf32e5153fdaf9b0ea8b3123997af1c8cf0913952b1fe6725e306aa