Malicious PDF — malware analysis report

Static analysis result for SHA-256 59f98d5e6e0de7f4…

MALICIOUS

PDF

102.6 KB Created: 2021-07-30 23:03:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: 7b4683747329f71ad8cb838de0ed4dec SHA-1: 5d97920967d11111216d96667dbf4b80c5eb5d2f SHA-256: 59f98d5e6e0de7f4dc53a86b7adc33c588e7d5b363785ca0638490c5d13e0e45
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to lure users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 6

  • 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
  • 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 https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16071236d65764---11002432380.pdf In PDF document text
    • http://relatives-united.com/clients/75139/File/61269196702.pdfIn PDF document text
    • https://kuzeyilac.com/resimler/files/26611195149.pdfIn PDF document text
    • http://happy-travel089.com/CKEdit/upload/files/rigupiwuna.pdfIn PDF document text
    • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/b9956ae9394438097cdc6bd83145a3d1/42723496351.pdfIn PDF document text
    • http://xn--l3cbpp3gh4a5g5c.com/userfiles/files/mewawakijevewewuwanite.pdfIn PDF document text
    • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/8f6d0f24859b69d8e49790901709de58/61763124680.pdfIn PDF document text
    • https://www.nordatec.com/wp-content/plugins/super-forms/uploads/php/files/svs11287bvjbhc3u6rs1i03tki/lusobumogomivuzogugesu.pdfIn PDF document text
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a83f8a67eba---litutosomovo.pdfIn PDF document text
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5c41d9f845---badikapafapewabatetololip.pdfIn PDF document text
    • http://ballstonfamilymedicine.com/clients/861402/File/gapenerizakizemoxerawapo.pdfIn PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7b2576139---17985797438.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606caf8d33fbe---22567658297.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/160b232615cf65---nanonavejuvogexofebexedel.pdfIn PDF document text
    • http://cukiernia-waltar.pl/qcms/userfiles/file/dinipoxapafumutemowezug.pdfIn PDF document text
    • http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ed86e0fbe7---74931527749.pdfIn PDF document text
    • http://backyardreleaf.ca/clients/6/6a/6a4eaaf8452764cb6fc14c9064ed0c71/File/xevejutagajidosaj.pdfIn PDF document text
    • https://tskrea.com/userfiles/file/3547753859.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160bfa8efbb8ad---bananaridoxinobadigogap.pdfIn PDF document text
    • https://alariel.be/userfiles/file/21690261239.pdfIn PDF document text
    • https://arvikabc.com/images/uploadedimages/file/juzabukoxe.pdfIn PDF document text
    • http://clasesholandes.com/userfiles/file/golinagikusimisojepo.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606ff95772088---bipetanepomug.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=how+to+use+auto+clicker+chrome+extensionPDF 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_off00012ae7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AE7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000142fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142FE 10864 bytes
SHA-256: 2212a4da7af935304bf09dc27aa6c4e4e828a0c4945e9cf4c8130789cc281667
font_02_sfnt_off00015bf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15BF7 17528 bytes
SHA-256: 0170772263b548d28b621aa2f9e6a579c187c60b20481d31e84c4261c6cca171

Open this report in the interactive analyzer, or submit your own file for analysis.