Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fffc0e415f6ca58…

MALICIOUS

PDF

116.7 KB Created: 2021-06-27 01:37:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 49bc4c1b7d1aad7f364c46502ac1a2f7 SHA-1: ea2d25d4d2665a7529f986c530cdf457785dddd0 SHA-256: 9fffc0e415f6ca58b20f02ae773dc6c4bfd917d8054457a708268bee2b3b136d
156 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised CMS upload storage and disposable hosting, suggesting it's designed to redirect users to malicious sites. The presence of numerous unknown URLs further supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9848

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 http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7a71e0dc7e---sometefoxumoxo.pdf In PDF document text
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b58db77688c---gebuvubot.pdfIn PDF document text
    • http://lateonsettay-sachs.org/userfiles/file/fesigoramezavefipixipis.pdfIn PDF document text
    • https://havanic.com/cache/fck_files/file/98539479292.pdfIn PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9afb465c2---tewib.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074f78160687---93295308471.pdfIn PDF document text
    • http://www.anieliasfx.com/uploads/textareas/file/dofir.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8e1673a789---96187837082.pdfIn PDF document text
    • http://antonio-pelella.eu/userfiles/files/58229082942.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/vscui0a5pnofc7b6jgfc6oie41/51747674164.pdfIn PDF document text
    • http://iwishop.hu/file/komikuvamano.pdfIn PDF document text
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160866b148e3ff---81824075543.pdfIn PDF document text
    • https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/5ca42b0ac511663f230f2bd70d63f90c/zazeretimuwavaxer.pdfIn PDF document text
    • http://falerisztika.hu/tmp/funinujubazeguxividiba.pdfIn PDF document text
    • https://toromecanicorodeo.com/files/kimidifexuzeg.pdfIn PDF document text
    • http://sanders-scottfamily.com/clients/26926/File/45170710641.pdfIn PDF document text
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/6f92954d572c5d2284e0bf9ce2506a1c/mepunewobereb.pdfIn PDF document text
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a0f1769be00---65017676667.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d9d61808c8---pijepadesuxun.pdfIn PDF document text
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b471508b543---rudof.pdfIn PDF document text
    • https://www.nestroots.com/wp-content/plugins/super-forms/uploads/php/files/1iha46ascf8h58qdbs3r08s3d6/pemeligorako.pdfIn PDF document text
    • https://www.alignerco.ca/wp-content/plugins/super-forms/uploads/php/files/b7b2f8a09c37c67b121ee347b7818cbb/59791253972.pdfIn PDF document text
    • http://archerelectricsupply.com/userfiles/file/50364647151.pdfIn PDF document text
    • https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/3ed5807fbfc7db531054f7087bb6a213/76574621950.pdfIn PDF document text
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/06df237dfd5ba7556dcba7165ca97cd6/68618777072.pdfIn PDF document text
    • https://gfow.om/wp-content/plugins/super-forms/uploads/php/files/7ni2p0bh2b32shb89p4kmb7060/33244132447.pdfIn PDF document text
    • http://beijingxinzhi.com/userfiles/file/20210507123334_867341822.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=anger+issues+meaningPDF 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_off000166f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x166F4 10268 bytes
SHA-256: af256d6a5d4bd584714f5b3051c355102afcb57b08bd581033a7e150b19198e4
font_01_sfnt_off00017e02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17E02 18004 bytes
SHA-256: f0c24edeef394351793ebbd502bf4d03385bd86de9d6d8f94d7970b5fac69bfc
font_02_sfnt_off0001ad72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AD72 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1