Malicious PDF — malware analysis report

Static analysis result for SHA-256 cee30ab0ee7a02e8…

MALICIOUS

PDF

91.0 KB Created: 2021-06-29 02:05:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 49b0f24414c7a92ab45b23e82fbe0a05 SHA-1: 282e4ee19c8d6217dd8d043da13a5d386859c3f4 SHA-256: cee30ab0ee7a02e8874773fe6f027ff4faf31b80419e194222fad3b89c873e0c
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a high number of links, many pointing to compromised CMS uploads or disposable hosting. The JavaScript and link farm likely serve to redirect the user to malicious sites or download further payloads, consistent with a phishing or malware distribution attempt. The presence of numerous external links suggests an attempt to leverage compromised websites for hosting malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9866

Heuristics 7

  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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 http://kstarsmall.net/userfiles/file///sererekivijasozebapi.pdf In PDF document text
    • https://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/c01e136a9cb54b21e1b71b7e27b3e7ed/kijaf.pdfIn PDF document text
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/2172686ba85e9100a28ebaf546321808/94914169440.pdfIn PDF document text
    • https://www.varisistanbul.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072e2376295e---20257135822.pdfIn PDF document text
    • http://heyumpnd.com/userfiles/file///zifofabanawid.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c6a79c9b22---gokazojipiro.pdfIn PDF document text
    • http://herningbadintra.dk/app/webroot/upload/files/46045082145.pdfIn PDF document text
    • http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/1bf453161bf3edf765274525b8eda898/78380056661.pdfIn PDF document text
    • http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/160827d064a15f---92095588924.pdfIn PDF document text
    • http://graciaindoutama.com/kingkong/userfiles/files/754717389.pdfIn PDF document text
    • https://www.chesapeake-lighting.com/wp-content/plugins/super-forms/uploads/php/files/9ffadc235c957a521b6faa6feec54613/xetomekonogibusufox.pdfIn PDF document text
    • http://designbeginnings.com/upload/file/vosetavagesadodivobu.pdfIn PDF document text
    • http://kxnjl.com/userfiles/files/84757579363.pdfIn PDF document text
    • https://charlesstreetvideo.com/userfiles/file/1026459422.pdfIn PDF document text
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/71a1973f06b8f3c62547f98f0c441351/kerowomano.pdfIn PDF document text
    • https://lawtutors.co.uk/js/ckfinder/userfiles/files/27624617894.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/160d4b0279c268---14492478686.pdfIn PDF document text
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/m7m3pbdnfb0fupigcnks3bees6/livugovunutu.pdfIn PDF document text
    • https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/d0c73b30baf7312f838323c18478ed2b/99413362871.pdfIn PDF document text
    • http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088a1f51bfab---xomunosemurizumebejek.pdfIn PDF document text
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/pj1ruj08j3prj94jauahpi5i2b/xikonefezusasiwi.pdfIn PDF document text
    • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/21d887e149450373790a499486b84152/12419138785.pdfIn PDF document text
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16084157fb8349---wunolawigipodopelisonotu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=meaning+of+sure+footedPDF 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD049 17104 bytes
SHA-256: 75975ed43382789aae7f32d46238c76567e921fea72ef5bf539c1a7665bced3e
font_01_sfnt_off0000e969.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE969 3204 bytes
SHA-256: 3403da711e2e59ee9709c7f4b65fad4148c13c8172b0cbab25d36551150dcef2
font_02_sfnt_off0000f663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF663 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00010e7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E7A 10576 bytes
SHA-256: ff7de8426496a37a29684a04b651e77606383bb7b23ded4637200b823c057db2
font_04_sfnt_off00012689.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12689 22548 bytes
SHA-256: 1e822d122bf84e32ee8ba9c09f82c39120f25ac4b5c65bd6905710980e43f3b2

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