Malicious PDF — malware analysis report

Static analysis result for SHA-256 75919adaa1cccf48…

MALICIOUS

PDF

94.1 KB Created: 2021-08-14 00:06:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 13108ec4da76b339c2c92286e86150ac SHA-1: 930e907a4c0e25faf1b45690fd69b915daf84f8d SHA-256: 75919adaa1cccf484d016cc1675b3e4cb446cb355f9b787b66f04af31c4b5746
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external resources, many of which are hosted on compromised websites or disposable domains, indicating a link farm designed to redirect users. The 'SE_PAYMENT_REDIRECT_LURE' heuristic strongly suggests the intent is to trick users into changing payment details. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with phishing and redirection tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://espacioschillout.es/images/admin/file/60839424341.pdf In PDF document text
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a6b0ed512c1---munawele.pdfIn PDF document text
    • http://porpora.eu/imagenes/imagenes_contenidos///mupaxepukawat.pdfIn PDF document text
    • http://9meclinic.com/ckfinder/userfiles/files/keloxasalo.pdfIn PDF document text
    • https://stillwaiting.org/userfiles/file/zoponadetizavadudobupiju.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e6f7c535be---ritusog.pdfIn PDF document text
    • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076bfe343846---49908826190.pdfIn PDF document text
    • http://rocincorporated.com/domain.com/images/dynamic_pages/file/96219591178.pdfIn PDF document text
    • http://atomleasing.ru/media/File/duxeka.pdfIn PDF document text
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e47c9569c87---zisadunotubasiwiredo.pdfIn PDF document text
    • http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/16072014ca3c7a---xuvosatoma.pdfIn PDF document text
    • https://alnahamgroup.com/userfiles/file/95880782321.pdfIn PDF document text
    • https://rozgarnetwork.com/ckfinder/userfiles/files/57628340096.pdfIn PDF document text
    • http://patokapugsnkisses.com/clients/61143/File/48351216519.pdfIn PDF document text
    • https://macauroommate.com/ckfinder/userfiles/files/19600251895.pdfIn PDF document text
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607aade8697bb---89800007881.pdfIn PDF document text
    • http://www.alexgis.com/siteuploads/editorimg/file/vupovoruporu.pdfIn PDF document text
    • https://erinmillssmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/m9dfc4qpau7m3gutvnd1cb21f2/karekurekopudanijema.pdfIn PDF document text
    • https://ienter.bg/files/jefafuregapajofinibiwesi.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adbb6b18dd7---74114066019.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/f83e902a1b1de6c15560ff51d6251b8c/takewiwipirinidugugefiju.pdfIn PDF document text
    • https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/2a7a1abf8ebe019a4f1533f6d5c7bb48/49923834989.pdfIn PDF document text
    • https://majubesar.info/contents//files/24749660914.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=can+you+put+cinema+hd+on+apple+tvPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • 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_off00010888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10888 10824 bytes
SHA-256: ccf4cbdd1a95847f587ccfb71e0ea2641e646261bc48141285b6b05a6cc4ae8f
font_01_sfnt_off00012155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12155 18100 bytes
SHA-256: 1dcfe460ffed2faaa8a4eaed227265d5cd00605b1c2e527277999a7df8cebf52
font_02_sfnt_off00015031.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15031 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1