Malicious PDF — malware analysis report

Static analysis result for SHA-256 30c01acb7719b9be…

MALICIOUS

PDF

69.3 KB Created: 2021-09-08 05:59:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 63b17693298d75d81d9d2b047fcb76d8 SHA-1: be232fce392d71febe6770afb300706d4b65c7d5 SHA-256: 30c01acb7719b9bec50ef2d0266989037c260ea9e4cacdf1d60fd6f3e1ad7134
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a link farm pointing to compromised WordPress upload storage and other disposable hosting, suggesting an attempt to distribute malicious content or phish for credentials. Although no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9135

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://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090760a9edc8---vadimowuruz.pdf In PDF document text
    • http://sns.hu/_user/file/kixumiwedagefevoxew.pdfIn PDF document text
    • http://cansuyu.org/resimler/files/56883832499.pdfIn PDF document text
    • https://sgdivorcelawyers.com/wp-content/plugins/super-forms/uploads/php/files/cb49211657416494c31d979544ac5521/mugaxunapemilos.pdfIn PDF document text
    • http://rabotatver.ru/userfiles/admin/luturogi.pdfIn PDF document text
    • http://engroupe.ca/aym_image/files/xokoletutatowujurefopemol.pdfIn PDF document text
    • http://johnmarzillier.com/ckfinder/userfiles/files/nogogojejef.pdfIn PDF document text
    • https://okazionche.com/files/40616453391.pdfIn PDF document text
    • http://amtutoring.com/clients/865321/File/jomoza.pdfIn PDF document text
    • http://rld-carbon.ru/file/81456928404.pdfIn PDF document text
    • https://praward.tw/wp-content/plugins/super-forms/uploads/php/files/9c568d149f178770fa340a32088a53da/22657013657.pdfIn PDF document text
    • https://turismo-galicia.es/ckfinder/userfiles/files/64728563806.pdfIn PDF document text
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/mnumt7umkqsq93vlpn5qs7hpb7/semokirowabodupoz.pdfIn PDF document text
    • https://anmimar.com/royal/userfiles/file/31302902039.pdfIn PDF document text
    • https://www.proctoloji.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fb197ac4fb---pexunupodiwovetinutineti.pdfIn PDF document text
    • http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160a33c8939a0e---73766199313.pdfIn PDF document text
    • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16092027796f8f---nozeguripeveluribipet.pdfIn PDF document text
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/2d9329c1c41e0dd415007f019a173983/15661445219.pdfIn PDF document text
    • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a32a7ae9bbc---71483879709.pdfIn PDF document text
    • http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078a69424188---1660012703.pdfIn PDF document text
    • http://sosonomo.com/ckfinder/userfiles/files/59673735340.pdfIn PDF document text
    • http://palakkadtourism.in/ckfinder/userfiles/files/jonutoxaxawaditofurixex.pdfIn PDF document text
    • http://whuntex.ru/userfiles/file/duwufijidafinedaleganajip.pdfIn PDF document text
    • http://m2m2design.com/userfiles/97690388729.pdfIn PDF document text
    • http://stigstudiotecnico.it/userfiles/files/26104419616.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=materi+termodinamika+lengkap+pdfPDF 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_off0000e134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE134 16668 bytes
SHA-256: d270541092a30699e22a042d0ee2f884ac4f543e45c77614e98d2a4445695762