Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d858698bf99d6a1…

MALICIOUS

PDF

84.1 KB Created: 2021-10-07 02:36:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: eb1aa483f05d37f8d0bf8406a1109409 SHA-1: 04dd8aed242183fa04a1e23196143ef20ebfe063 SHA-256: 5d858698bf99d6a1b29040f9c812f66fdfdd2caa50f8baee4ffcdf5e32ea5066
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://nomylo.ru/uplcv?utm_term=karma+is+coming PDF link annotation
    • http://yugang360.com/upload_fck/file/2021-9-17/20210917211221167497.pdfIn PDF document text
    • http://x-site.by/upload/editor/files/koxogarusebawarenogeno.pdfIn PDF document text
    • http://artin-intranet.com/ckupload/files/50505270175.pdfIn PDF document text
    • https://kvzriu.org/images/file/9162313011.pdfIn PDF document text
    • http://aydinservis.com/ckfinder/userfiles/files/xezamika.pdfIn PDF document text
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/1615d630b22e54---bifojidebopaven.pdfIn PDF document text
    • http://kxzyjy.com/CKEdit/upload/files/zonelumogeziseva.pdfIn PDF document text
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16134010c07339---37245847637.pdfIn PDF document text
    • http://acm-medicali.it/userfiles/files/79689298739.pdfIn PDF document text
    • http://braintradingbcn.com/wp-content/plugins/super-forms/uploads/php/files/02ef992f65db391e3e01f521e186874d/4790446129.pdfIn PDF document text
    • https://martabaktelor.com/contents/files/rijanevonutezegojuboz.pdfIn PDF document text
    • https://loppisidjupdalen.se/images/uploaded/file/48947752082.pdfIn PDF document text
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/1614331690b0f0---9647544309.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/1614240755d90b---47088116551.pdfIn PDF document text
    • https://designclarf.it/file/18989900433.pdfIn PDF document text
    • http://studiopiergentili.it/userfiles/files/posiju.pdfIn PDF document text
    • https://siriusdynamics.com/assets/uploads/files/xijofuse.pdfIn PDF document text
    • http://www.fashiongale.ro/userfiles/files/resokuxifewazitesurigeve.pdfIn PDF document text
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/16152b3c35bb5c---80532996623.pdfIn PDF document text
    • https://invision.buzyhub.com/files/nivapinuzuxab.pdfIn PDF document text
    • http://hungthanhauto.com/luutru/files/widevadamufuropigade.pdfIn PDF document text
    • https://cpsguffanti.com/uploads/file/51257824290.pdfIn PDF document text
    • http://miydz.com/mingyi/images/userfiles/file/37154765380.pdfIn PDF document text
    • http://studioprogettoarchitettura.eu/userfiles/files/mozuperoxoxozoge.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_off0000e0f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F6 10288 bytes
SHA-256: 160ccaea749fc825105896eb5e8c60f1825cf415d7c9d92c20a59ab01da0717a
font_01_sfnt_off0000f816.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF816 19484 bytes
SHA-256: 30b85c299667f0658c9c2fb110904ffb15a4262e655f34f1398c2912c3e1bdf6
font_02_sfnt_off00012a9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A9C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1