Malicious PDF — malware analysis report

Static analysis result for SHA-256 25bc11fe2408e0d6…

MALICIOUS

PDF

205.6 KB Created: 2021-09-02 11:58:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 5a05f048fc56ddd2e3251bd57c7742f6 SHA-1: 3f413058ed561fed21187702859ff90988f23b49 SHA-256: 25bc11fe2408e0d61ebd57fb0124d349cd3ebacfd2e57a9ba51835331a4c7b44
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV, specifically as a phishing trojan. It contains numerous links pointing to compromised WordPress upload storage, indicating an attempt to redirect users to malicious content. The presence of multiple distinct hosts hosting PDF files suggests a broad campaign for distributing malicious payloads or conducting phishing attacks.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2568

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16084364922517---72698153054.pdf In PDF document text
    • http://brezov-gaj.si/uporabnik/file/poxadawipobimegu.pdfIn PDF document text
    • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/87b8901841d2a1d5d465c5568a521acc/jelaj.pdfIn PDF document text
    • http://roocenter.ru/upload/file/70852733680.pdfIn PDF document text
    • https://discovercefalu.it/_data/images/file/52727798945.pdfIn PDF document text
    • http://sevimticaret.net/userfiles/file/xeninolumuro.pdfIn PDF document text
    • http://emanuelmlevin.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/vikotipoforoginagaxugaj.pdfIn PDF document text
    • https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/c3b6743121afcb786e66f41d420dc727/wudokofuxiw.pdfIn PDF document text
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080b1559b7be---fosugipirupomero.pdfIn PDF document text
    • http://calisnt.com/uploads/files/susoluga.pdfIn PDF document text
    • https://samiznojmo.cz/wp-content/plugins/super-forms/uploads/php/files/f9748301b67d18153178b05b8852d4c2/nodafopi.pdfIn PDF document text
    • http://managhantasala.net/mailuserfiles/file/3844083774.pdfIn PDF document text
    • https://e-uchebnici.com/img/file/2884779513.pdfIn PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/78b1f848ede3efb90025f7051481d251/surinugezebib.pdfIn PDF document text
    • https://aimara-bg.com/userfiles/file/4009920385.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/64812028798.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609ed7ca524d3---lujebupizesurulebewadevaj.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fa89e485e9---13862552667.pdfIn PDF document text
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082a3a78a4fb---mirekinodefal.pdfIn PDF document text
    • http://wych123.com/upload/files/40139214664.pdfIn PDF document text
    • http://qdsenfeng.com/data/files/lipubagebowelokezule.pdfIn PDF document text
    • https://absolut-fit-and-dance.de/wp-content/plugins/super-forms/uploads/php/files/vt0tqijuasfbhtfr9brm09673u/wagibo.pdfIn PDF document text
    • http://notariocprietoa.com/notaria/documentos/files/82369475014.pdfIn PDF document text
    • http://appletechsolutions.com/userfiles/file/4608974263.pdfIn PDF document text
    • http://signexpowholesale.com/project-new/christianbook/upload_images/file/85364757640.pdfIn PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5d80cf3356---kuwulolives.pdfIn PDF document text
    • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fbadb3cb84---47060341340.pdfIn PDF document text
    • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607203e40904f---20426218661.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=cabala+judaica+pdf+portuguesPDF link annotation
    • 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_off0002b008.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B008 16308 bytes
SHA-256: 64002d6c193b04299b2bd313aeaf080f044855efb51e912375018143b79200ff
font_01_sfnt_off0002c634.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C634 1964 bytes
SHA-256: cb83427253be486b5dc35224710cea1d2a27078ad6da64da340d8beb93dbb3aa
font_02_sfnt_off0002cf48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF48 26412 bytes
SHA-256: 306a1fe5a5c037c3b2e751eb84ed21a30d31e6710cfd1aea8f4e6bf6b01ea763
font_03_sfnt_off0003119c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3119C 11092 bytes
SHA-256: 7af2977dbdc30b039ad9de38f8885d088c58b9868eeabece485a0d71ba7b5cff