Malicious PDF — malware analysis report

Static analysis result for SHA-256 1911b0ce5a75ae5e…

MALICIOUS

PDF

82.4 KB Created: 2021-09-03 13:16:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: 4d812ae3937017363674a27bc3cc66b2 SHA-1: 539e0cb673fa26c26eff466dd7f1117f195a03fd SHA-256: 1911b0ce5a75ae5e0934c818151a0f9704c126306a76473d6a1a2746d495768f
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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 http://ingenermarket.ru/userfiles/nivuvigezogug.pdf In PDF document text
    • http://nicosiacaffe.it/file/11264000733.pdfIn PDF document text
    • http://parquessolaresdenavarra.com/userfiles/files/guxebepevezigo.pdfIn PDF document text
    • http://96stone.ru/userfiles/file/kovuxigosefomekeragugoz.pdfIn PDF document text
    • http://be1971.com/clients/a/a1/a19be2fc4cf8b198b52f296748481ce5/File/mexojitaferenizimotuwaf.pdfIn PDF document text
    • http://bbpcosmetics.com/admin/upFiles/2021-5/file/jomewekizunejip.pdfIn PDF document text
    • http://dashoernerboot.de/userfiles/xisere.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/aca20e38531f1612997aa0b9548cac03/kudelajezisu.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a4dc0528cb9---8328170212.pdfIn PDF document text
    • https://castel.ro/userfiles/file/zixomamavorewatewi.pdfIn PDF document text
    • https://cecprint.com/images/file/xevuvezefutavubamasizi.pdfIn PDF document text
    • https://khabul.mn/mmpa/userfiles/files/79490952577.pdfIn PDF document text
    • https://rhdplumbing.com/wp-content/plugins/super-forms/uploads/php/files/42044b927ae3b551a6e7a5d72bcac3e9/nibipeziragomokutorut.pdfIn PDF document text
    • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/33d219e652171086833f69479ace0436/siwesilolob.pdfIn PDF document text
    • https://cbdc.co/uploads/ckfinder/userfiles/files/redovukidikokidusivuna.pdfIn PDF document text
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16085f298b4b62---malofopiwafugoji.pdfIn PDF document text
    • http://www.psoealora.es/ckfinder/userfiles/files/11300256016.pdfIn PDF document text
    • https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078c6435af02---dekux.pdfIn PDF document text
    • http://pratiklinik.com/img/userfiles/files/5221980136.pdfIn PDF document text
    • http://pathtojanna.com/userfiles/files/63256945712.pdfIn PDF document text
    • http://xn--80aafmoni2biho.xn--p1ai/admin/ckfinder/userfiles/files/68240733236.pdfIn PDF document text
    • https://visionbrindes.com/admin/fckeditor/userfiles/file/38875671010.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=blindspotting+screenplay+pdfPDF 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_off0000ddcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDCB 10964 bytes
SHA-256: b84911c0d607ae9a7b43ce2ccdf39861eab4100ab59e0f62e6a2a82f7b7818b7
font_01_sfnt_off0000f727.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF727 17260 bytes
SHA-256: fe765abb8567f1f1de934b1d65226f4258ad1d6055c3f5fd780ccdeac065056e
font_02_sfnt_off000123ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123AB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1