Malicious PDF — malware analysis report

Static analysis result for SHA-256 60d3964bdab1caab…

MALICIOUS

PDF

80.0 KB Created: 2021-07-15 15:36:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: c6bd68f335660f62fd17905ca653b517 SHA-1: 9de6f82ad9df739c99b3fa17ca7949ab24f2fb30 SHA-256: 60d3964bdab1caabb2e5ffc3eb288806670841451cf3d31bda6f42055a9fda47
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains a link farm pointing to various PDF files hosted on potentially compromised websites, suggesting a phishing or malware distribution campaign. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics indicates a tactic to obscure the true malicious destination by using numerous disposable or compromised domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6051

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://mimpiindah1.com/contents//files/44476484154.pdf In PDF document text
    • https://bio-obst-und-gemuese.de/userfiles/file/54998980595.pdfIn PDF document text
    • https://aulacvn.com/upload/fck/file/kisasizipojedodunoxuw.pdfIn PDF document text
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160afa2dc3f754---gekodigovisibaxatirugub.pdfIn PDF document text
    • http://aahsclassof1978.com/clients/b/b6/b6117739535924054831d33ecd54b00a/File/40709634655.pdfIn PDF document text
    • https://fentesmakina.com/paket/upload/files/foxidorelotojaj.pdfIn PDF document text
    • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f0bdc75a1a---natebesop.pdfIn PDF document text
    • https://chambres-hotes-aube-bleue.fr/userfiles/file/dinivekisositopik.pdfIn PDF document text
    • https://tort-art.ru/userfiles/file/vulafiritotomu.pdfIn PDF document text
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160977cb934226---33759623179.pdfIn PDF document text
    • https://brs.jo/userfiles/files/7167630089.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a81ffab0309---99102339952.pdfIn PDF document text
    • http://pizzeria-millemiglia.de/app/webroot/img/editor/file/7745410033.pdfIn PDF document text
    • https://www.aironface.com/wp-content/plugins/super-forms/uploads/php/files/bbeddbd9cf1ba3b6dc4ad5eef5c046de/nifavuraxevud.pdfIn PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160a23ca681c6d---84713569930.pdfIn PDF document text
    • http://habitat3.eu/userfiles/files/96261663958.pdfIn PDF document text
    • https://ghnservizi.com/file/laboripukibopabenonurawi.pdfIn PDF document text
    • http://ecohort.com/userfiles/files/futikonasusazalupin.pdfIn PDF document text
    • https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d42e4dc0cd---91584686062.pdfIn PDF document text
    • https://designclarf.it/file/zanovakoxibin.pdfIn PDF document text
    • http://solarhomepage.ch/fckeditor/editor/images/file/55823857797.pdfIn PDF document text
    • http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3b6be661ad---boxeragew.pdfIn PDF document text
    • http://vorne-sitzen.eu/pcms/content/file/35307550987.pdfIn PDF document text
    • https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/j8scuo0jlqkpbqc9hs8jp3hf77/63036385626.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=account+ka+question+answerPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010297.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10297 17252 bytes
SHA-256: 9b0e0bb644de59cbb3fdd81ba4395a0c739267b6e0ec57a3b8dbf28bb18f45a4

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