Malicious PDF — malware analysis report

Static analysis result for SHA-256 4242ccda2af03024…

MALICIOUS

PDF

83.2 KB Created: 2021-07-24 10:09:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 83f3037df142bc850f012a3cf29f5b96 SHA-1: ac22f9cee73bd41f524011661a58687222b36f5b SHA-256: 4242ccda2af030244fe8b74d7f80829e3e1ace77672d22303f9e1853813d7c94
124 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and exhibits characteristics of a link farm, with numerous embedded URLs pointing to various domains. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for these links, suggesting an attempt to distribute malicious content or phishing lures. The presence of a URL containing 'download spotify premium cracked android' further supports the lure of pirated software.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4694

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://agrobud.net/uploaded/file/sixulisaxakili.pdf In PDF document text
    • http://therealmccoyfamilyreunion.com/clients/f/f9/f9ea119420dddc0cc5ac7622830b9f68/File/22480528893.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/573e2c72ce936082bc753aa8c4e8e359/jinukugerexijowozerepiwol.pdfIn PDF document text
    • https://acavacecio.it/userfiles/files/32781187829.pdfIn PDF document text
    • https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160a4ce4952791---mawoxinemato.pdfIn PDF document text
    • https://fastcomputer.vn/wp-content/plugins/super-forms/uploads/php/files/b466fe42d175ad2285a016c7d89bccd0/dofujizitubapezekez.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/daxizoruxefefe.pdfIn PDF document text
    • https://vayamcs.com/content_files/files/51363023999.pdfIn PDF document text
    • http://svenstavik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb4a161f160---zofotavivodenimuxefugek.pdfIn PDF document text
    • https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/90ed91ff2803dfb3f3258a3f6990e59d/ropejafodekobebozobomu.pdfIn PDF document text
    • https://performanceltg.com/wp-content/plugins/super-forms/uploads/php/files/bcf84cb7558006194a5f344416210462/gedepijirujijow.pdfIn PDF document text
    • http://onlinepravenconsultant.com/uploads/wysiwyg/files/75454502708.pdfIn PDF document text
    • http://maskaevlawyer.ru/userfiles/file/65913444870.pdfIn PDF document text
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16072c6e1378c5---50938250344.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160ba96c205860---jasaguvu.pdfIn PDF document text
    • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/7cea3e4d33c5438d8b119e573c459124/fatozuxaki.pdfIn PDF document text
    • http://kolkandkolkdesign.com/site/data/ws/files/99587696819.pdfIn PDF document text
    • http://skncn.com/u/files/kinazogufisabet.pdfIn PDF document text
    • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3c63c5d0e6---dosopuzurikaziwodil.pdfIn PDF document text
    • http://alibabashipping.com/userfiles/file/tezuzopo.pdfIn PDF document text
    • https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/b312a65d9fcd7ad0ca5b35e963660a59/15078778297.pdfIn PDF document text
    • http://lws-realestate.com/userfiles/files/polovodiziwitofufegekam.pdfIn PDF document text
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/831de1df7d0aedb435a875590f3f873f/kopogefawof.pdfIn PDF document text
    • http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/de41a84617fa651b696bac4e84f6d797/26369514901.pdfIn PDF document text
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ccfa0e4d906---bafezakuvudedifinivibam.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=download+spotify+premium+cracked+androidPDF link annotation
    • 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_off0000f0f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001090b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1090B 11172 bytes
SHA-256: 8cac50e4f3a2fbe09a88ce79b56a5e2e32914a9ad5eb63fe1efe8ff400516398
font_02_sfnt_off00012343.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12343 17628 bytes
SHA-256: 0adf92746265b217bde5463fe5e116ba2e0af9c36ae3e0ffd73071ce9966df08