Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e35bff10958be77…

MALICIOUS

PDF

74.6 KB Created: 2021-09-07 01:53:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: aea1015559c0af94f3b678b3ca696b76 SHA-1: 2e07f5a62b55ccd5dc82246c22494b1b89b8df41 SHA-256: 4e35bff10958be770fbe763eb1f2a4eb4d7be3bef684d88a27504b69643e15dc
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160922e1a8ec05---28222413008.pdf In PDF document text
    • http://lamekatus.ee/uploads/ckeditor/files/fozunefesawex.pdfIn PDF document text
    • https://www.jnvhardoi.org/ckfinder/userfiles/files/29761041500.pdfIn PDF document text
    • http://chinhlytailieuluutru.com/media/ftp/file/zewajepuritawalaf.pdfIn PDF document text
    • http://alpinedelhi.com/userfiles/files/21207938151.pdfIn PDF document text
    • http://misterholidaysanprisco.it/userfiles/files/sojesevakomuxigirebukok.pdfIn PDF document text
    • http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/160d1de2b91d6c---10617522468.pdfIn PDF document text
    • https://krzczonowice.pl/gfx/file/gewijaba.pdfIn PDF document text
    • http://www.sudaff.com/pics/file/vutitoririte.pdfIn PDF document text
    • https://rhdplumbing.com/wp-content/plugins/super-forms/uploads/php/files/a8183dca5e9613ce5a08e871f4b279f0/99461789223.pdfIn PDF document text
    • http://shinserviceodi.ru/wp-content/plugins/super-forms/uploads/php/files/2592e4f64dfd854a412772e8b9e8ebba/fosidanozeregufiruzo.pdfIn PDF document text
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fe76f7b121c---domizomiwefuredonipa.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610e0b334f239---siduxudu.pdfIn PDF document text
    • http://asiadomainstore.com/userfiles/file/fizifujatesaju.pdfIn PDF document text
    • http://studiotipaldo.com/userfiles/files/22436979101.pdfIn PDF document text
    • http://rld-carbon.ru/file/gerusiwoda.pdfIn PDF document text
    • https://www.lightingdynamics.com/wp-content/plugins/super-forms/uploads/php/files/f23ecd88a6dbf23cbd9e05c63994ccde/mumedopepojoma.pdfIn PDF document text
    • http://kibunajcc.com/ckfinder/userfiles/files/votibirezifidesijelivi.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160bb638f0917f---pojetimutawofexakoja.pdfIn PDF document text
    • http://ajisushionline.com/uploads/files/babaxodovudisajuripejew.pdfIn PDF document text
    • http://facilitymanagementassociates.com/survey/userfiles/files/2462829416.pdfIn PDF document text
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4369a480fc---7908728272.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=adjectives+nouns+verbs+and+adverbs+worksheetPDF 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_off0000be9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE9E 11016 bytes
SHA-256: 655b6bd972e064397ed0b22ebee6ce396c1cc74c56f80d39dbc113be40198774
font_01_sfnt_off0000d83a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD83A 17236 bytes
SHA-256: b3bc605787eac9ff40660a5c00f72842df0819225cc497ce1d662d19e2c2ed3e
font_02_sfnt_off0001048b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1048B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1