Malicious PDF — malware analysis report

Static analysis result for SHA-256 478c1925d15765d7…

MALICIOUS

PDF

108.3 KB Created: 2021-09-03 08:50:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20
MD5: dab6347d8a479794659d23cf0de35291 SHA-1: 2e06f828d4fcbc6dd66bc95de114895ea7fd7c82 SHA-256: 478c1925d15765d7244612136ea61410fa5c762589d25bb20b20feeb3a214afb
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://www.mixedclass.com.au/wp-content/plugins/super-forms/uploads/php/files/ectdu992ada53bl33keir4ule2/suronabanexebomidi.pdf In PDF document text
    • https://weinquartier.at/wp-content/plugins/super-forms/uploads/php/files/bd608e1c820db9e38f98be4b849faaba/laronosalen.pdfIn PDF document text
    • https://tortugafilms.ca/adminfiles/file/66467990778.pdfIn PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/db2864bed1e8acb62ca0d4fd949b79ef/bipamibiko.pdfIn PDF document text
    • http://2013.letnifestiwal.pl/ckfinder/userfiles/files/84899609309.pdfIn PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fcac60b1672---ganexerorozaropaseno.pdfIn PDF document text
    • https://bouwservicewinthagen.nl/userfiles/image/file/58658031931.pdfIn PDF document text
    • https://infiniteprospects.com/FCKeditor/file/25046869021.pdfIn PDF document text
    • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078dada4452b---fatodabavusik.pdfIn PDF document text
    • http://outspokenholland.com/userfiles/fckFile/20210714033154.pdfIn PDF document text
    • http://oinworkshop.com/clients/6/6d/6d9161a7191ba42f41383a85782e2f4f/File/35149105167.pdfIn PDF document text
    • https://whatproperty.ng/ckfinder/userfiles/files/debusubifojase.pdfIn PDF document text
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/0p9ne9heib0glu88roce4e427n/silitufekusufix.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072c4a4a7e84---6643783908.pdfIn PDF document text
    • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/b4bd5b7cfe0288b05d4ee21b86bc93e7/89395326818.pdfIn PDF document text
    • http://yidaig.com/uploadfile/file/20210821224749.pdfIn PDF document text
    • http://arunimaflavours.com/userfiles/file/1366311306.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b891c451920---50246198195.pdfIn PDF document text
    • http://williamshudson.org/clients/3/35/35bf74ce48b5c120232fd40fb4fe3e45/File/zirusutorotifumunizivagoz.pdfIn PDF document text
    • http://geojeoceanhotel.com/userfiles/file/20210816122111.pdfIn PDF document text
    • https://kanat.com/upload/ckfinder/files/dosovifukufap.pdfIn PDF document text
    • http://enjoyisagenix.com/ckfinder/userfiles/files/87649610563.pdfIn PDF document text
    • http://gillsandgeckos.com/userfiles/file/88662367057.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=ejercicios+propioceptivos+de+hombro+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_off00013eb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EB4 19324 bytes
SHA-256: 50167349510ff49f710ab08a5928bb1fbf1eb26ae22d0890c3e3468e3d3b55d2
font_01_sfnt_off00017091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17091 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000188a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x188A8 10892 bytes
SHA-256: f8f3bb00e454c14546667acee59b0ee15d61652928b2318ae0f8b5bc64e9516e