Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c29ee05f2a55a9a…

MALICIOUS

PDF

74.8 KB Created: 2021-07-25 16:48:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: e32321bb39a0338eb9fe09dfefa23e0d SHA-1: 2c26cf916ddba813eea6fd1b04276ad1e8396ba8 SHA-256: 2c29ee05f2a55a9a892abac9a8fd0d46984c27066a66b386a5a7fd1ab948f569
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The sample is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress sites, suggesting a phishing or malware distribution scheme. The presence of a 'download button' heuristic further supports the idea that the PDF is designed to trick users into downloading malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 8

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/dd48b5f1a3dedacf54d1d50e08380b53/mijetoxoxizizefegezenare.pdf In PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7fcd0a3e8---zojire.pdfIn PDF document text
    • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/af480ed2560a28dd7036fcc4b0351658/99691863831.pdfIn PDF document text
    • http://iqlacpro.vn/emotive/upload/files/kajasu.pdfIn PDF document text
    • http://jtylek.pl/Upload/file/26770652269.pdfIn PDF document text
    • http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fb97725d5f---71451672420.pdfIn PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa40c8986f4---sexolusiduranagamudamisit.pdfIn PDF document text
    • https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/fd231c497b0dd161706cfe3ad82effc9/mesugori.pdfIn PDF document text
    • https://zabulgaria.org/userfiles/file/3690614156.pdfIn PDF document text
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/mgmdsaq1ch8dk9lhek0hpdnqcc/wafunonebumegelifadibemex.pdfIn PDF document text
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b747ef21a05---fukik.pdfIn PDF document text
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607908e42b0c0---witibejaj.pdfIn PDF document text
    • https://sardavetri.it/userfiles/file/62074604707.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/81286ef98326d6a7c28a0bb0db4d1b85/perufenobefasuzepasike.pdfIn PDF document text
    • https://b2cexpressdemo.com/userfiles/file/bekelejifubij.pdfIn PDF document text
    • https://roweryelectra.pl/app/webroot/uploads/file/16208602061483.pdfIn PDF document text
    • https://bibliothequedesarts.ch/ckfinder/userfiles/files/31964664449.pdfIn PDF document text
    • https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/513276d643249d43300888a99bc01402/78048728054.pdfIn PDF document text
    • http://www.jacenter.org/js/ckfinder/userfiles/files/kumufepisurimogitug.pdfIn PDF document text
    • http://szyuangang.com/UserFiles/file///nataf.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6f003ee925---laxegegeserak.pdfIn PDF document text
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e833086fbaa---puronum.pdfIn PDF document text
    • http://statsale.com/data/upload/ck/files/86627047220.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=present+and+past+participle+adjectives+quizPDF 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_off0000c11e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC11E 10888 bytes
SHA-256: 38626660d0af4d51002008c7a46154296c93f06f2ae2406d78ed3650b98ed445
font_01_sfnt_off0000da3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA3C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f24e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF24E 16460 bytes
SHA-256: 10a3a1b9689c2f0749fdda9535b9b123bdc1d56ea1cfc6164bcfb4884692e7d0

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