Malicious PDF — malware analysis report

Static analysis result for SHA-256 f991d6b554867581…

MALICIOUS

PDF

75.3 KB Created: 2021-10-13 02:14:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-14
MD5: d78d2748b5c61671f6d8d8cd3abcd9d4 SHA-1: d33baad2dc9b3bc9b132421f9c9ac16684fd22d1 SHA-256: f991d6b5548675811514bd0d724d73f280c1fa8af7fc3084c0380e00d53b97b6
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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://crysiq.ru/uplcv?utm_term=carcinoma+meaning+in+telugu PDF link annotation
    • http://lamardaegu.com/upfile/user/file/22903465748.pdfIn PDF document text
    • http://minhanh.com/files/goxifolaxifinutirofaben.pdfIn PDF document text
    • https://ngusacdon.com/upload/files/58046979188.pdfIn PDF document text
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/161525e67d7ef5---bururazevamomuzasitajoz.pdfIn PDF document text
    • http://autolavaggiocraparotta.it/userfiles/files/tokiviwijoniruzit.pdfIn PDF document text
    • http://ty-int.com/files/files/wogutu.pdfIn PDF document text
    • http://llux.vn/uploads/files/51995630147.pdfIn PDF document text
    • http://dr-temt.ru/images/file/lowuvuvazeguw.pdfIn PDF document text
    • http://inspiredindianfoundation.org/uploads/14609425657.pdfIn PDF document text
    • http://hoteldazegliotorino.com/userfiles/files/ravawale.pdfIn PDF document text
    • https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/3ac65a7adbbf6326c9e85cebb600d133/61048050786.pdfIn PDF document text
    • https://xn--lenachatka-57b.pl/uploaded/file/madabigorezilafosozibotim.pdfIn PDF document text
    • http://bedrucken24.de/userfiles/file/pimekapiwexorizabafowon.pdfIn PDF document text
    • http://craj-ops.craj.cz/soubory/luvonanogobosavezo.pdfIn PDF document text
    • https://concurs-euclid.ro/upload/fck/pimanapalofobazukako.pdfIn PDF document text
    • http://hyundaihungthinh.com/uploads/images/files/gezulagubewu.pdfIn PDF document text
    • http://maslag.eu/userfiles/file/39284729338.pdfIn PDF document text
    • http://buzmakov-ua.ru/admin/ckfinder/userfiles/files/16040348327.pdfIn PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615d4b2734272---vonifamijiwopexuk.pdfIn PDF document text
    • http://korio-olsztyn.pl/userfiles/file/71111850743.pdfIn PDF document text
    • http://enewind.com/pliki/file/86021040994.pdfIn PDF document text
    • http://eske.hu/wp-content/plugins/formcraft/file-upload/server/content/files/161422dab62173---gatajulotizusavex.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_off0000c0d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0D4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d8e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8E6 17948 bytes
SHA-256: 980c97bc291d723a521ab40e8a66ebfad7df613c23c2575782517d7552b2075f
font_02_sfnt_off0001079c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1079C 10536 bytes
SHA-256: eedcf12c1d565286195e4d234b4b5364ee6ed953f656a1902f4454c49d9601fd

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