Malicious PDF — malware analysis report

Static analysis result for SHA-256 4258f60b722f55da…

MALICIOUS

PDF

77.8 KB Created: 2021-07-03 04:56:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: a3170a929f5bd265197f653b0855c7c1 SHA-1: 6bf9e32f675b731d2a3a7af4842c8de74214ef2e SHA-256: 4258f60b722f55da866a8d88b26fd2a68b15ac2786bbb3f16ab49bd83984afa6
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://alsultantrading.ae/userfiles/files/dagevugomawigezav.pdf In PDF document text
    • https://floorco.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/f81491aabce2871a85db40f58b7629c7/9395023353.pdfIn PDF document text
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607247432303c---lexovoj.pdfIn PDF document text
    • http://hrjok.com/uploadfile/file/38410328456.pdfIn PDF document text
    • http://kasystemofkarate.com/clients/861259/File/5905519778.pdfIn PDF document text
    • http://frezerovka.by/images/fxeditor/file/lesutozefi.pdfIn PDF document text
    • http://polymer-optix.de/userfiles/file/tazasexus.pdfIn PDF document text
    • https://www.idahomedia.com/wp-content/plugins/super-forms/uploads/php/files/7c2cf8f2f5646d0b13623daa5695ed40/josekumafodilaweremi.pdfIn PDF document text
    • https://aneri12.eu/res/file/lugomaturu.pdfIn PDF document text
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d76fd1e1d5c---10247217597.pdfIn PDF document text
    • https://dakotaterritorydevelopment.com/ckfinder/userfiles/files/62884783502.pdfIn PDF document text
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094f487d445c---gesagop.pdfIn PDF document text
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd29bd31e0---bafinofupanuxosabaj.pdfIn PDF document text
    • http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609256282910b---77179702872.pdfIn PDF document text
    • https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/bee02e44cdb16e45e82cf7bdeb2a2390/rerarudazumal.pdfIn PDF document text
    • https://mvservice.it/file/jitijixulanatamev.pdfIn PDF document text
    • https://walkandsmile.com/userfiles/file/32222537086.pdfIn PDF document text
    • https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/bbb835c7e4aff9a0a857aff7e4d65720/weruvuna.pdfIn PDF document text
    • http://handbook.hu/upload/page/file/giporif.pdfIn PDF document text
    • https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/kpbr5nks7dr1fc40ijrljd3a4f/50299615493.pdfIn PDF document text
    • http://clubmaniacr.com/campannas/file/5978372870.pdfIn PDF document text
    • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/16073b41de47e6---37221290502.pdfIn PDF document text
    • http://gps-tw.com/CKEdit/upload/files/29831143694.pdfIn PDF document text
    • http://toyotarent.kr/FileData/ckfinder/files/20210528_9BA3FF23EDC5F53C.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=where+did+moses+find+the+ten+commandmentsPDF 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_off0000ce90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE90 10688 bytes
SHA-256: aea19074f46707a3c8267242a113ec159742f11f1eb669e91bbf4ed276ede71e
font_01_sfnt_off0000e6f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ff07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF07 16304 bytes
SHA-256: 66c56aa42f5dd0a4f34ccd214ae245675cd4c2cffb8424153f8f7f01ae194eb2