Malicious PDF — malware analysis report

Static analysis result for SHA-256 61cef4000b621268…

MALICIOUS

PDF

95.5 KB Created: 2021-07-02 02:00:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 6f6131469256842d7f38a4643a6ac607 SHA-1: e3bf77514eb0170070d40c74efa89c183f1eaa3b SHA-256: 61cef4000b6212685de20c93be70318d2e764dc1ca6b4a1fc114d6eaa7af7370
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous URLs pointing to compromised WordPress sites, suggesting a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of an attempt to lure users to malicious content, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cebc65b4028---sibefirox.pdf In PDF document text
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071de6c60c55---zanamifujokufumuvokunazo.pdfIn PDF document text
    • http://fxmeat.com/upload/file/dd64f03fd317b67f84638c8efe843497.pdfIn PDF document text
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/b2cv9r6tmi0ietc0k44m91ctn1/88267876865.pdfIn PDF document text
    • http://emannsltd.com/userfiles/fakelanabugaluxejejufu.pdfIn PDF document text
    • https://alexandrapanayotou.com/web/images/static/file/65075243623.pdfIn PDF document text
    • https://carrieres-pierre.com/userfiles/file/dumepomaneju.pdfIn PDF document text
    • https://www.medicalart.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7a1a04de1---2177072746.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/b5b30efe91997ede891ae3051723710e/ditigokeser.pdfIn PDF document text
    • https://emprenderem.cl/files/31908227701.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a9df167d923---32404861002.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/ql3ac9rlmsomgsvh8ujg0ja5p6/jakerinugaz.pdfIn PDF document text
    • http://innotack.com/userfiles/files/lufowido.pdfIn PDF document text
    • https://destockbaby.com/ckfinder/userfiles/files/pisosenanapi.pdfIn PDF document text
    • https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/iccg1v6lfdnf66ib74ae5nfcl1/sejojajuwedide.pdfIn PDF document text
    • https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/7nfoafo43v0sv3nhk1q90hb6k8/kemojalif.pdfIn PDF document text
    • http://sewakendragroup.com/userfiles/file/luwapizixajobexegosepuma.pdfIn PDF document text
    • http://www.halpellet.hu/userfiles/files/40525368000.pdfIn PDF document text
    • http://www.teeintact.com/admin/fckeditor/editor/filemanager/connectors/php/img/file/karujutomebakagamikofeku.pdfIn PDF document text
    • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/1d66743adc55517eb054b41454b49dbf/pejixe.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d2d86b99bf---vugufebafolaxulorizagete.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=aldosterone+and+high+blood+pressurePDF 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_off00010ee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EE2 19092 bytes
SHA-256: da1fbc7ffe55b6d33f8e54feb10f091e4a2b43fb4c7ca55787de68b4b48c7872
font_01_sfnt_off00014020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14020 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00015837.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15837 10892 bytes
SHA-256: d1bafb2dc681fc67a16a6213222f50cab56b29e73607590b57fa5beae51efb93

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