Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b8b084304fca4e…

MALICIOUS

PDF

81.8 KB Created: 2021-09-08 11:37:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 26919559b5d7ca3ed4927d4bcd5087da SHA-1: 340cb39f1a5f2b07293b081479499c928400b905 SHA-256: 72b8b084304fca4ed21bdbda54978febbd815f24aac161c401f29116f22789aa
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://nomylo.ru/uplcv?utm_term=hindemith+ludus+tonalis+pdf PDF link annotation
    • http://avandcie-automation.fr/ckfinder/userfiles/files/86764782333.pdfIn PDF document text
    • http://ttlh.vn/storage/ckfinder/files/sugugisojeja.pdfIn PDF document text
    • http://pericosrentcar.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160bbb9fa8de9d---koxarulabevesi.pdfIn PDF document text
    • http://hccc252.ca/clients/e/e4/e484b38507f190a955b66748903449e1/File/96354013678.pdfIn PDF document text
    • https://gulfsupremesa.com/ckfinder/userfiles/files/28088700008.pdfIn PDF document text
    • https://floresdeserrezuela.com/aym_image/files/ruzoworozibupekutidireki.pdfIn PDF document text
    • https://gtselect.fr/ckfinder/userfiles/files/tekawedava.pdfIn PDF document text
    • http://davidlbrooks.com/clients/868292/File/68220882210.pdfIn PDF document text
    • http://stauarchitetti.eu/userfiles/files/2853290175.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/97gi6aj3oe2ucb9ofruk4rdm23/mefiluvanasaxotoda.pdfIn PDF document text
    • http://rlangkhan.com/upload/userfiles/files/1491586479.pdfIn PDF document text
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608b79ac9b6a1---zegivazudorenem.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/8rrmjc44qv60vl8uiccqvv3laa/35228031198.pdfIn PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/49d8de8572d5ae45a5545c1ea79c6d18/25988390902.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608c82278ac5e---lepokukovipokazumoxixalez.pdfIn PDF document text
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16098304edcd2f---94741063010.pdfIn PDF document text
    • https://rumputhijau.com/contents//files/8481302680.pdfIn PDF document text
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160b3d014c3e82---2498647919.pdfIn PDF document text
    • https://pensiunea-escape.ro/ckfinder/userfiles/files/vozutupezobanalowur.pdfIn PDF document text
    • https://vansuloi.com/uploads/userfiles/file/luvofedoputisirix.pdfIn PDF document text
    • http://litho-and-co.fr/ckeditor/upload/files/3835022053.pdfIn PDF document text
    • https://aprilboya.com/userfiles/file/makor.pdfIn PDF document text
    • https://heatingboiler.ca/fck_upload/file/39749573371.pdfIn PDF document text
    • 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_off0000db2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB2D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f344.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF344 10752 bytes
SHA-256: 655c2700fcb152205db46e918d1e2ddaf6dcfc87d06165660db1b662bb961a99
font_02_sfnt_off00010bb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BB3 17892 bytes
SHA-256: cbf2ef23c6c18fc9fe4937648f11d6d3b4117774eb762bc7d7db960c058ab377