Malicious PDF — malware analysis report

Static analysis result for SHA-256 9413849749e2eea2…

MALICIOUS

PDF

96.6 KB Created: 2021-09-05 06:59:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 1004d3cab2e3e81a4d7bdc09b5d42e40 SHA-1: f0329eb1f2ff9582e8dcd8ae2ce90e3757f10ff8 SHA-256: 9413849749e2eea2680917dd8eaae7b5fe980f4a82c1a8b95df45affb10f09f5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm with numerous URLs, many pointing to compromised CMS upload directories, suggesting an attempt to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://heyratacademy.ir/file/dajafewipix.pdf In PDF document text
    • https://www.bbmnetlicitacoes.com.br/cms/ckfinder/upload/files/59749264451.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609786353fb26---fonedorezobezedub.pdfIn PDF document text
    • http://swotaweb.org/img/upload/file/vutazovivigomi.pdfIn PDF document text
    • https://turbooto.vn/upload/files/26458357478.pdfIn PDF document text
    • http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ac1826c491c---39634463370.pdfIn PDF document text
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/160702a91a625c---dupadibamezipigetitu.pdfIn PDF document text
    • https://jeevandeepspecialcare.com/ckeditor/ckfinder/userfiles/files/24155466718.pdfIn PDF document text
    • http://artechq8.com/beta/uploads/files/28751172932.pdfIn PDF document text
    • https://juhaszautovill.hu/userfiles/file/suwozumotuzum.pdfIn PDF document text
    • http://solarwindependence.com/ckfinder/userfiles/files/37215026781.pdfIn PDF document text
    • https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a833d88d06f---goxaduw.pdfIn PDF document text
    • https://pilotcenter.gr/wp-content/plugins/super-forms/uploads/php/files/p9d3lkhejfsr1193gt2jl3sjno/rozixem.pdfIn PDF document text
    • http://herve-coiffure.ci/files/8594477923.pdfIn PDF document text
    • http://paitoonbox.com/userfiles/files/babisafobuf.pdfIn PDF document text
    • http://euroear.eu/ckfinder/userfiles/files/sevinuzam.pdfIn PDF document text
    • https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/482da1c378daca828df280983276b7e9/28319855670.pdfIn PDF document text
    • https://pharmalogindia.in/ckfinder/userfiles/files/tinutivotipojipumijad.pdfIn PDF document text
    • http://szyuangang.com/UserFiles/file///84587468062.pdfIn PDF document text
    • http://xn--80aamdqpfpr.xn--p1ai/upload_picture/fawurijivapidimupudadu.pdfIn PDF document text
    • https://ntiverification.com/userfiles/file/51488359338.pdfIn PDF document text
    • https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/ets3c1caje28o4q1056qhjenk7/gemebagawajatimegiziku.pdfIn PDF document text
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608212283103c---zevokuwidazawakador.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=social+justice+theories+issues+and+movements+pdfPDF 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_off0001129b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1129B 11256 bytes
SHA-256: 2dbc18e7103112527c8fd634a4dfc7a26a2f7f606d83e66b10a0cf91aa151a5d
font_01_sfnt_off00012cc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CC3 18460 bytes
SHA-256: 950444791da27e2b0ae7fcf13b1ca5765aadabcbf95c58e3f918cebcf6903cd8
font_02_sfnt_off00015c94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C94 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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