Malicious PDF — malware analysis report

Static analysis result for SHA-256 06445732d4214cac…

MALICIOUS

PDF

62.4 KB Created: 2021-08-30 13:10:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 6cb9ab9adb73309553237e2e2a0a4fc0 SHA-1: 1c8c4a9bcffbe03c4c26cdecce1c756ba4b97a9a SHA-256: 06445732d4214cace83e7effb99c33b044c85635a996745ce426e0c20bed2909
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links pointing to compromised WordPress installations and disposable hosting, suggesting a phishing or malware distribution lure. The presence of external URIs and links to potentially malicious content indicates an attempt to redirect the user to a harmful site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5428

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://allytemp.ru/uplcv?utm_term=how+to+calculate+half+life+of+uranium+235 PDF link annotation
    • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609137b3ef92e---82011422832.pdfIn PDF document text
    • http://koreanhotpot.com/uploads/files/23576566138.pdfIn PDF document text
    • http://jnnycc.org/userfiles/file/13383574801.pdfIn PDF document text
    • https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/a51cf085dfee369f751be02ec7c0f1ac/tuguvalupokus.pdfIn PDF document text
    • http://xboxheerlen.nl/userfiles/file/41308077228.pdfIn PDF document text
    • http://cbcom.eu/ressource/site-image/files/kajotipesa.pdfIn PDF document text
    • https://srmhospitalities.com/images/bulk_images/files/52025390573.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610d9fb6712b5---75225142646.pdfIn PDF document text
    • http://zigzagontwerp.nl/sites/default/files/file/63193607827.pdfIn PDF document text
    • https://bczenekar.hu/files/file/lakimaburuk.pdfIn PDF document text
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d87410812c---dupivusakexidajuzot.pdfIn PDF document text
    • http://velo.hu/UserFiles//file/jegaramumowurugebawa.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bb71dcca2d---55085095277.pdfPDF link annotation
    • http://shsalumniauditorium.org/clients/f/fa/fa32e32112b7cad64a7d7e78b95ed61b/File/xulizurekokowi.pdfIn PDF document text
    • https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/161235654ba382---wunusawepufik.pdfIn PDF document text
    • https://rebel-guitars.com/wp-content/plugins/super-forms/uploads/php/files/e69bae86fbf58d35035f598a05bde716/64504130135.pdfIn PDF document text
    • https://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/789780f59397f3c81e74db89982f3b00/tesofuvefasokizalasorepuz.pdfIn PDF document text
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a2741d59032---darozorapizujazodobekati.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a79c9a5dedd---jovukutanadeg.pdfIn PDF document text
    • http://srihemkuntschoolint.com/slbdavbatala/userfiles/file/vobonosabilaraj.pdfIn PDF document text
    • http://tuhs1970.com/clients/a/ac/acc339db084e87cdfae31a76a6c96f1c/File/13187951760.pdfIn PDF document text
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/16095b0bf6eefe---46249205610.pdfIn PDF document text
    • http://irina-beha.com/ckfinder/userfiles/files/88055038655.pdfIn PDF document text
    • 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_off0000b8dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8DC 15940 bytes
SHA-256: 5d3351c8161e909c1d648e3985b1e1ec33219bddbd63b61ff24092d0372f795f
font_01_sfnt_off0000e10f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE10F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1