Malicious PDF — malware analysis report

Static analysis result for SHA-256 adbc6a73f93bbd54…

MALICIOUS

PDF

97.9 KB Created: 2021-08-14 10:48:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: eda268734d65e5fb6c0ffe8b36900776 SHA-1: 1e61662d88bef20fd69a1dca482f78041cf5895a SHA-256: adbc6a73f93bbd54e47e431eb750f8ace27767cb0367eea217dd2f2f2dc2f995
124 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV with a Pdf.Phishing.Trojan signature. Heuristics indicate it functions as a link farm, pointing to multiple compromised WordPress sites and disposable hosting domains. These links likely serve as lures to phishing or malware distribution sites, aiming to trick users into clicking them.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4108

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://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/b692175c12941a0b431faaa7c91ae1f6/sixoragolaxidafuzive.pdf In PDF document text
    • http://xn--80aafkqcanfpgnhbng3b5i9a.xn--p1ai/pict/file/46248415892.pdfIn PDF document text
    • https://digireg.ch/upload/sovibog.pdfIn PDF document text
    • http://goldenbaycruisesagent.com/userfiles/file/saduworisiber.pdfIn PDF document text
    • http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1608654f1d67cf---fawituvukero.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/5nnpdhatr2lc072ieg644k8g6d/61942595670.pdfIn PDF document text
    • http://velo.hu/UserFiles//file/49231371656.pdfIn PDF document text
    • https://volpatoebrum.com.br/_common/admin/scripts/ckfinder/userfiles/files/fedawe.pdfIn PDF document text
    • http://www.sintsprev-ms.org.br/ckfinder/userfiles/files/48490809408.pdfIn PDF document text
    • https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/16085043e603e9---134554062.pdfIn PDF document text
    • https://dreamscapes.ca/dream_scapes/userfiles/files/17120786894.pdfIn PDF document text
    • https://heritagecambodiatravel.com/userfiles/file/dezevapazoju.pdfIn PDF document text
    • https://phuketwebstudio.com/ckfinder/userfiles/files/65391846246.pdfIn PDF document text
    • http://smarttechsolutionukltd.com/uploaded_files/userfiles/files/ravebewalobokisadopi.pdfIn PDF document text
    • http://burchiellati.com/file_fck/file/wazimijasoxomobonabot.pdfIn PDF document text
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160a675a7b40e9---pugilumufekikutirubi.pdfIn PDF document text
    • http://mazurubezpieczenia.pl/zdjecia/fck/file/vivufitipufukekufide.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/7069ebaa27e2241491ef3a37e6e76b96/lufikexonariforo.pdfIn PDF document text
    • https://parfumzone.ro/files/file/fusel.pdfIn PDF document text
    • https://k2salight.com/wp-content/plugins/super-forms/uploads/php/files/3d4e0a5b4959fe3b197dc6296f92c3f5/72053654997.pdfIn PDF document text
    • https://zoldlepes.hu/userfiles/file/62064519036.pdfIn PDF document text
    • https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/hu353gu4m2vvkofu5mk03b2jj1/pavogimokitomofugujotoj.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/79316382606.pdfIn PDF document text
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0fff8b4a5b---lizixabumevafomipulusef.pdfIn PDF document text
    • http://jedzenie365.pl/ckfinder/userfiles/files/nabuzirifu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=active+and+passive+voice+exercises+for+class+7+cbsePDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013018.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13018 10952 bytes
SHA-256: a85874f2996aa5c6fe15583ce8cf884f6c611726c1bd11e0253dfcc177c5e565
font_01_sfnt_off00014985.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14985 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1