Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b4c907e2d1772f…

MALICIOUS

PDF

83.6 KB Created: 2021-06-09 02:07:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 100aa46d98eea2c93845d2af95417c87 SHA-1: 6e0396ec05d41286c40b37a0ae5c3a982b2717b9 SHA-256: 72b4c907e2d1772fea7ace33b9fe288bc0085ee70e06380e22ea5438ff1fc289
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://huntic.ru/uplcv?utm_term=mini+militia+mod+god+apk+download PDF link annotation
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/a5pmnke7e2mvcvu6db0vamedo2/8675709624.pdfIn PDF document text
    • https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/16077bc9435a5c---17135695172.pdfIn PDF document text
    • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8d5586ac3---67407217599.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/f7849ae3d9a021133abd6a06f49e9915/dikixanexolebutowolini.pdfIn PDF document text
    • https://www.couleurs-et-jardin.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160bc939c7311c---34424969165.pdfIn PDF document text
    • http://pericosrentcar.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16078d6c45da38---betivosa.pdfIn PDF document text
    • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e365bb8cfa---76077172454.pdfIn PDF document text
    • http://mdsalon.ru/img/lib/file/86999576157.pdfIn PDF document text
    • http://hongdanhaudio.com/luutru/files/vemonejemikojowo.pdfIn PDF document text
    • http://healthywithhart.com/res/file/71254200921.pdfIn PDF document text
    • http://kulturazebrak.cz/userfiles/72107753518.pdfIn PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a14d91c53b8---wodipepebubedopudekoluj.pdfIn PDF document text
    • https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/160942aeea4cd4---tumame.pdfIn PDF document text
    • http://davidhammerstein.org/userfiles/file/33392346669.pdfIn PDF document text
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/2431b6b2369c5bde8613b4bce99aca7d/gokukatoxafenupowi.pdfIn PDF document text
    • https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/3faa3f7d640293146712260043d5134f/18862853650.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn 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_off0000f399.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF399 5168 bytes
SHA-256: 016e52e9fe3b64b5f4f3f52caa469b742ec711634b83a1ad0d34c560ccccd2a0
font_01_sfnt_off00010538.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10538 11080 bytes
SHA-256: 4b1675fc0d0a8654791751b445edcc77f8323ecc37a9afb0ae5da61790eca99e
font_02_sfnt_off00012b07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B07 16660 bytes
SHA-256: 5c37151e58b57006fec45205b953024960161fc126972448518f450544b1ac12