Malicious PDF — malware analysis report

Static analysis result for SHA-256 30608d3eba2a062e…

MALICIOUS

PDF

94.1 KB Created: 2021-06-29 20:06:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 5de8d3f8961bd9fa40da6bb0a47d69fc SHA-1: 1100e1c942f31d5c5143204f537ca4a372416a7d SHA-256: 30608d3eba2a062efd4faec36978834132adfe5da8021e69d3fba1b06288b683
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to various domains, many of which appear to be compromised WordPress sites. The primary purpose seems to be redirecting users to external content, likely for phishing or to download further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

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 https://nomylo.ru/uplcv?utm_term=the+meaning+of+renowned PDF link annotation
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a43659c408b---suwuralaxowesazazukomer.pdfIn PDF document text
    • http://bogieclassof67.com/clients/71235/File/53509525279.pdfIn PDF document text
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/1f6eupl4riro41jhopebtt2im2/xagawabexeduwuguzafuv.pdfIn PDF document text
    • http://noithatnhapkhaugiasi.com/luutru/files/wafemobasex.pdfIn PDF document text
    • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/ml6t865mle0a6n3e48oft1eo94/dejabotunowumufuxove.pdfIn PDF document text
    • http://naturalmis.com/userfiles/file/rulep.pdfIn PDF document text
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfc9d57b6e2---nenumakimozavovaja.pdfIn PDF document text
    • http://faw-asia.com/image/upload/files/16128799007.pdfIn PDF document text
    • https://kham.vn/userfiles/file/sozaxuneveragoratigonerox.pdfIn PDF document text
    • https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/16071a9678e937---31423230346.pdfIn PDF document text
    • https://anpheatingandac.com/nbloom/fckuploads/file/71249521871.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/caim56ki846n6r9bvr7v35to70/85315366099.pdfIn PDF document text
    • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091fe39d0041---gizumuga.pdfIn PDF document text
    • https://beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/3a487addade8d45c609374c7449617a9/bixizejelefus.pdfIn PDF document text
    • https://khotelmarket.com/FileData/ckfinder/files/20210608_058118A9BF701EE9.pdfIn PDF document text
    • https://accu-split.com/userfiles/files/nevexiwodimebek.pdfIn PDF document text
    • http://alpha-th.com/userfiles/file/58111737215.pdfIn PDF document text
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/c775cd2412127e2ed0b1447e93244fa5/63055993177.pdfIn PDF document text
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160777f3b9f7f2---vezesamamefapuri.pdfIn PDF document text
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609ff13f818d5---76570350560.pdfIn PDF document text
    • https://fermuar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d9a80f21b02---68276506935.pdfIn PDF document text
    • http://purifoy2020.com/clients/1/11/118d8b7ee1ea4bab8fb19da95c56260f/File/58860500155.pdfIn PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/q7p87m8mpsiuvbga96k41ft732/litiwiwezigebunowabe.pdfIn PDF document text
    • https://alexandrapanayotou.com/web/images/static/file/rujawa.pdfIn PDF document text
    • 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_off0000deb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEB6 2264 bytes
SHA-256: 78cf987319709642798f03a1ac4bff773afd1c319e51832d85a9584dc119c524
font_01_sfnt_off0000e8cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8CB 10536 bytes
SHA-256: f7d37f2f212b2e19fbfda06203d57fff8d3e9d66888f615b4ada3c3666da5259
font_02_sfnt_off00010062.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10062 17076 bytes
SHA-256: 861f61db5d99bbc4eecbb7ded3d6612c5fff0b381c4dbbfa4a93ff69368ec11f
font_03_sfnt_off00011979.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11979 22232 bytes
SHA-256: ef1bea7e9ebea8e1b22014a60d51e5180eaf12f2e4b44093b48e97a1415a4fe9
font_04_sfnt_off0001525c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1525C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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