Malicious PDF — malware analysis report

Static analysis result for SHA-256 882eb752890a0678…

MALICIOUS

PDF

85.1 KB Created: 2021-06-27 12:47:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: ff4b4551efe0f562fd1a5478bf2f7e88 SHA-1: 4df187f71935884f63f581093337b77e914ff17d SHA-256: 882eb752890a067833fcbf99d6c541397d05eccb449c2cb9226accc280e79f6f
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF containing embedded JavaScript, which is a common technique for delivering malicious content. Heuristics indicate the PDF acts as a link farm, directing users to multiple compromised WordPress sites. These sites host further PDF files, suggesting a multi-stage attack designed to obscure the ultimate malicious destination and evade detection. The ML classifier and ClamAV detection strongly support the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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.oasipizza.it/wp-content/plugins/formcraft/file-upload/server/content/files/160d048062605c---73291929158.pdf In PDF document text
    • http://broadviewlibrary.org/uploaded_bvlib/file/43302669071.pdfIn PDF document text
    • https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/dl5eo1v8q0nmd0vmv0itlibsva/48393519662.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/j6ir6ep5uftjacv6pal54v31q2/52491368873.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd4595eeea7---90911691982.pdfIn PDF document text
    • https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/5115cdf2877b1e7836177ecda54839e3/nubajurenunibizixeruje.pdfIn PDF document text
    • https://nhathuydesign.com/wp-content/plugins/super-forms/uploads/php/files/id5av4cb6h8h8jurch9tfs3642/dodojijibubum.pdfIn PDF document text
    • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609f23b46a393---gapabitavenepudigipa.pdfIn PDF document text
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077debf157e5---xitemotanox.pdfIn PDF document text
    • http://altaprecision.com/userfiles/file/72158638020.pdfIn PDF document text
    • https://sfasg.jp/js/ckfinder/userfiles/files/derigafiduwu.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/069c508e4485abf5e3e3d1960a5c5f95/kedepofaxemedaxuwar.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a49c572a06f---21886471345.pdfIn PDF document text
    • http://goldnumber.info/userfiles/file/woluzunigipixag.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/160c8715ca5568---nuxajogewikebokubi.pdfIn PDF document text
    • https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/tji216uvci8hrl35l77htvkhd2/xajokabitegigilexurudizus.pdfIn PDF document text
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/3e905648cc19258f74968fe5c0a2e6f8/kigeruwavobumekimuzujijen.pdfIn PDF document text
    • https://www.servicioscalibrados.com/wp-content/plugins/super-forms/uploads/php/files/5c598c353780eb5ee05489e110ec2993/13648389869.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c476b3b814---tumezafototepag.pdfIn PDF document text
    • http://nw-line.ru/generic/uploaded/xorizu.pdfIn PDF document text
    • http://zonwering-belgie.com/ckfinder/userfiles/files/vifavome.pdfIn PDF document text
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160ac79a496d98---36680150943.pdfIn PDF document text
    • http://zulassung4you.de/bilder/file/fazedofa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=extract+text+from+pdf+using+phpPDF 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_off0000e674.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE674 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fe8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE8B 11208 bytes
SHA-256: 4a0be8657a00e2bdda64478eacd1a270cf2e8011859eac5d16d077f61032dd2e
font_02_sfnt_off00011868.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11868 17664 bytes
SHA-256: 67fbd12e2879feb029ee9d921b44da5f5c1baaccbdbe36df3b8ae14c04a623fb

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