Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc9422a1f5a92722…

MALICIOUS

PDF

53.9 KB Created: 2021-06-28 09:52:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: b2587d05823b6fe4d9bd9f5ee6d2dc5d SHA-1: 0a7e6dfa58e4aa54b20816b74d5374655e279616 SHA-256: bc9422a1f5a9272272b5bac63c800953efd3d999d7cc16096ec8bd9270ae19e3
124 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, likely phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4912

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 https://catamma.ru/uplcv?utm_term=physics+short+notes+for+neet+pdf PDF link annotation
    • https://paidionresearch.com/userfiles/files/73281954076.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/1k2lfgl0ubfqivcs7alo24e9r1/woxulutusojidamefo.pdfIn PDF document text
    • https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/j63612vk6nnhteftfjmv8qahq3/26533284449.pdfIn PDF document text
    • http://erictex.com/ufiles/files/pojewizonapid.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16081e23662a5f---fodewoxizena.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a634c71d79c---33930430511.pdfIn PDF document text
    • http://allaboutdowney.com/userimages/taruwulijitutofonexo.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7aa2a3b321---nixivamil.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/4e07a38b375565243239ddb3e3dfb14b/wufel.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160c33324e36b5---94224868097.pdfIn PDF document text
    • http://ctkupavna.ru/upload/file/tijelasonugefofatoxeloj.pdfIn PDF document text
    • https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608f567710119---serizi.pdfIn PDF document text
    • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160cc99b8e6b3a---fixuterude.pdfIn PDF document text
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d452d8f9e0---votan.pdfIn PDF document text
    • http://patronusalapitvany.hu/public_html/upload/1273748660.pdfIn PDF document text
    • http://maslag.eu/userfiles/file/89732712861.pdfIn PDF document text
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/8bd912ee95fef82f14ff040f2d0cc232/xibuwifa.pdfIn PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160cb39bb17d60---zuvumonuxexuwexuvutez.pdfIn PDF document text
    • https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/140b97a95788b5b7572075ad3205ddfd/76043418140.pdfIn PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/55d736d23697f35b9007cf2c33b00565/somimalitox.pdfIn PDF document text
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/b39d3fd10fe72f699cb7939c02879bc7/tosanitawedibefewurupo.pdfIn PDF document text
    • https://aucordechasse.fr/vosImages/sozidinimamu.pdfIn PDF document text
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/160923b8482573---99572252049.pdfIn PDF document text
    • https://arenda1s.ru/wp-content/plugins/super-forms/uploads/php/files/4f2cf0740b17310aed9fa7883bb1fce8/katijiwunonusutazedil.pdfIn PDF document text

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