Malicious PDF — malware analysis report

Static analysis result for SHA-256 afa5f0683eeebcd1…

MALICIOUS

PDF

96.0 KB Created: 2021-07-13 07:52:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: f33876c8c5c0a263ce8d9b62447c48af SHA-1: a30fcca648f9987db84f14a9aeb20bc2ce412569 SHA-256: afa5f0683eeebcd18e53a34b950bd10daff46c1aa202eb904d8e041d80f8b40e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a link farm pointing to numerous URLs hosted on compromised WordPress sites, suggesting an attempt to distribute malicious content or conduct phishing. The presence of external URIs and link farms indicates a likely intent to redirect the user to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9937

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://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/232c373af956cf15ca6f0cea56058a90/jezuzokabobujavirulogo.pdf In PDF document text
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/0c8f02e81bf37165b163c4df9ae75246/88389530330.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/d0ej1th8fqjiu27mmubl09nbt1/55727222488.pdfIn PDF document text
    • http://xn--e1aazeoc7d.xn--p1ai/images/shared/file/pivovigewat.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d22325d9ec1---18558136297.pdfIn PDF document text
    • http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/f7bd0f47a838141128a71b24af80fc70/28777912679.pdfIn PDF document text
    • http://mispuntossaga.com/campannas/file/temasasamiz.pdfIn PDF document text
    • http://longchimvac.net/app/webroot/uploads/files/gujuko.pdfIn PDF document text
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/75c8ca71a4541d540359c6cbe5a608a9/sigirarelabosojakuf.pdfIn PDF document text
    • http://wwstationery.com/files/file/17884846681.pdfIn PDF document text
    • https://www.ltgpartners.com/wp-content/plugins/super-forms/uploads/php/files/05734313b32e7560bacbcdbea094f5d2/8622999012.pdfIn PDF document text
    • https://vallejardin.com/wp-content/plugins/super-forms/uploads/php/files/9a1bda4de96442aeee780955d66ac14f/4114127868.pdfIn PDF document text
    • https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c0548a7dee---revitixadupizanapelominu.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf8b7521f04---64010699444.pdfIn PDF document text
    • http://short-story.ru/upload/file/20791423869.pdfIn PDF document text
    • https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160836ec829114---muvopijupebun.pdfIn PDF document text
    • http://michaelwilliamslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/pomawetodalajopekaw.pdfIn PDF document text
    • https://hosvagyok.hu/userfiles/file/literavetizipolasav.pdfIn PDF document text
    • http://perles-del-beya.com/userfiles/file/pomafuvemekijuv.pdfIn PDF document text
    • https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/1a2982a1c09241ca460d9a682183b092/naxowuguda.pdfIn PDF document text
    • https://bearings.vn/images/ckeditor/files/68400673541.pdfIn PDF document text
    • https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/8433d927ce2591545add7418288cca35/guwezozefijaxetepuragoloj.pdfIn PDF document text
    • https://www.hontoys.com.au/wp-content/plugins/super-forms/uploads/php/files/5o8ecq86gvaiop8sogmdud1oag/tejalox.pdfIn PDF document text
    • http://donghozibistore.com/luutru/files/bilobojagipug.pdfIn PDF document text
    • http://ed-web.cz/userfilesfile/43942239889.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=baby%27s+day+out+full+movie+download+freePDF 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_off00010f88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F88 11108 bytes
SHA-256: b24a78b99a6cf7d889cc96fe76d7631f9c9faee1ffba1854bbb5fa541276a45e
font_01_sfnt_off00012993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12993 17864 bytes
SHA-256: 9cfa92a477287879aa5c3bbde8cf9ef9be79d55fae27af406415bdf2e56bc1e8
font_02_sfnt_off00015883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15883 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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