Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5fabebfcb5681ee…

MALICIOUS

PDF

137.7 KB Created: 2021-07-02 03:09:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 9cc5694c7abf5d17fd40f0719be37f06 SHA-1: 55958790a9c329ee4e14425c91ca1b1b7110183d SHA-256: f5fabebfcb5681ee4be893f47fdc2032d2959ffc86be017b7de9f7e42bcefdc0
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating it is likely a phishing or malware distribution lure. It contains numerous links pointing to compromised WordPress upload directories, suggesting an attempt to redirect users to malicious content. The presence of these links and the overall structure align with spearphishing attachment tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7553

Heuristics 5

  • 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.
  • 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://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085c4dc96f9c---wajijefawutanuwefav.pdf In PDF document text
    • https://www.cfo-search.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd380833466---fifelijiremizuzemuzipeka.pdfIn PDF document text
    • http://ypcalumni.com/clients/2/24/24042806289e0d450134266962f0a0d8/File/62628642338.pdfIn PDF document text
    • http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/ed24fd2470e05430e2ed13dcad9fa630/fitewuvoxirirejetegawo.pdfIn PDF document text
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dd7bcc1cb0c---99489402682.pdfIn PDF document text
    • http://doktor-okonski.pl/uploadimg/file/7310998911.pdfIn PDF document text
    • https://www.kadinlarsitesi.org/wp-content/plugins/formcraft/file-upload/server/content/files/16087ad3c841c2---92842273218.pdfIn PDF document text
    • http://kaowei.tw/image/files/20210618_045638.pdfIn PDF document text
    • http://aeronautike.com/userfiles/file/xamividezuvo.pdfIn PDF document text
    • https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/2f3bc2d03e94cbb96d2acab91377cc91/xowevugibomikomakoxeboket.pdfIn PDF document text
    • https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/r13od41rmjmgrm72fgohg9qfhb/pugoxadusokuxojebemi.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160776e446c154---99274740493.pdfIn PDF document text
    • https://ebooksweb.net/files/file/57346864494.pdfIn PDF document text
    • https://www.myosiaffiliate.com/199trust/img/file/xebura.pdfIn PDF document text
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/e8de9799a91b148960d16956b6d1bfeb/kasipitupisavojad.pdfIn PDF document text
    • https://ph2020.org/FCKeditor/file/99348655602.pdfIn PDF document text
    • https://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a2e69d8516b---zuvemumulugadaxebageri.pdfIn PDF document text
    • https://communeouchamps.fr/userfiles/file/48064105053.pdfIn PDF document text
    • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ba0076258a6---67571270158.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a69a4c5add7---59781483382.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160871d6287d9b---betenovedulom.pdfIn PDF document text
    • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16083a3e2e031c---32089206602.pdfIn PDF document text
    • http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/261074665f81f25c09364b2a26e595fa/23518944820.pdfIn PDF document text
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160b007cad8e81---feniladafugakunelegozo.pdfIn PDF document text
    • https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/066c06e510f4e8db44eadb6b5d5a0d5c/63253624902.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=functional+strategy+meaningPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001f9ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F9EF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00021206.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21206 10764 bytes
SHA-256: e70e8687d908d7e5ae4de842f57a58b5ca8deefa713117546e6d93b0d9af1b68

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