Malicious PDF — malware analysis report

Static analysis result for SHA-256 10a0f7a1ffe5a357…

MALICIOUS

PDF

84.6 KB Created: 2021-06-26 05:45:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: d154dc338994c8d224dc13b8b8abb9a0 SHA-1: 8f669f5f64cbab51904e54737544add74a6c7ea6 SHA-256: 10a0f7a1ffe5a357f552f2780f5c51336490110dfeb0cfeec20e2d57df02b62c
156 Risk Score

Malware Insights

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

The PDF file contains numerous links, many of which point to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/55a6e2c0dbd7b9e5fa66fa6daebce053/92743299666.pdf In PDF document text
    • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cf3be07231---matenavufeb.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16080faf2876d8---23761312001.pdfIn PDF document text
    • https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/3af481a2615f68dae164eb90520c1d35/23990143074.pdfIn PDF document text
    • http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/2cdb56882f810ee492e51619b97427f8/rukojonepokolulosej.pdfIn PDF document text
    • http://jucal.es/images/file/84121412603.pdfIn PDF document text
    • http://ranaghatpchsschool.org/userfiles/file/xazovujenininixilixez.pdfIn PDF document text
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2efad4b41b---19112899159.pdfIn PDF document text
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/jlrk736ggp6747p170jp7vvav7/92206975385.pdfIn PDF document text
    • http://jiuxingchaoshi.com/uploads/file/030116459597.pdfIn PDF document text
    • http://111-orte.de/testarea/cwsCMSlight/media/files/36281786867.pdfIn PDF document text
    • https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/64e7c30aaf1908a7e5d3b53e1e6f97d9/wexukisigoxelokezitaj.pdfIn PDF document text
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b1cea3e179---85312950467.pdfIn PDF document text
    • http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608fc9bedcad8---gesikepowu.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/cimej168o93fmjbt87al10oer1/15648933539.pdfIn PDF document text
    • http://auapp.ch/userfiles/files/kaxanufopinenulugi.pdfIn PDF document text
    • http://euredit-editions.com/userfiles/file/18782997162.pdfIn PDF document text
    • https://asiquim.com/ckfinder/userfiles/files/dufimivesanis.pdfIn PDF document text
    • http://rajhansnursery.com/userfiles/file/jexuwaki.pdfIn PDF document text
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b1b88d1d01e---gudazizaxenuvasuru.pdfIn PDF document text
    • https://alnahamgroup.com/userfiles/file/rijedexufukesiw.pdfIn PDF document text
    • https://alate.org/admin/fckeditor/editorfile/pasasedenekoxage.pdfIn PDF document text
    • https://vpntraffic.com/upload/files/mekeserazipiwewojive.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076fc7e229bf---63000190501.pdfIn PDF document text
    • http://penzion-u-zamku.cz/files/file/43496652781.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=interference+and+diffractionPDF 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_off0000e734.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE734 17288 bytes
SHA-256: 0236caf3901fd20abd9fe0ca54d467949a505735a2bd29915df17c5f7c078f6c
font_01_sfnt_off00011466.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11466 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012c7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C7D 10204 bytes
SHA-256: ed399746e8ef07bcc45de83ecf7828b4abf1c9408f7092e2af9bb7115ae57a05

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