Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d530cd91f777f1…

MALICIOUS

PDF

76.0 KB Created: 2021-09-13 11:25:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: d579519cc41babcb4662d6cc96740cf2 SHA-1: 9b85030abb20d940272c8d22035d1353e5028b09 SHA-256: c5d530cd91f777f1e33faad9d94a55cb5509bd788e4dd909968c49c449fdb555
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

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://wastran.ru/uplcv?utm_term=moto+gp+android+apk PDF link annotation
    • http://hoilhpnqbthanh.com/upload/file/96791120617.pdfIn PDF document text
    • http://plechotice.sk/tmp/file/tavuver.pdfIn PDF document text
    • https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/bafdde60cd378c94650ac80fe8be80f0/52839836014.pdfIn PDF document text
    • http://xn--2-140-swe8h.xn--p1ai/files/rupiwimovedubafabafu.pdfIn PDF document text
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613731e2afd46---nufexow.pdfIn PDF document text
    • http://ahjygjg.com/upload_fck/file/2021-9-9/20210909095442450930.pdfIn PDF document text
    • https://shellserva.nl/docs/Image/file/niwujeduviban.pdfIn PDF document text
    • http://sushiyaslo.com/uploads/files/53931238208.pdfIn PDF document text
    • http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/16138cc3410f92---loneno.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/2ak4magelqlr8hcglgogr30cq4/vapujilubusitusibapepe.pdfIn PDF document text
    • http://c2ctrading.org/cms_upload/files/nopaserolobubiwi.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/1613926dd4af90---kidizokiganubodakikig.pdfIn PDF document text
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/9cc122932b9deb4e4e41e040fc2ca49e/suzijikepu.pdfIn PDF document text
    • http://3mfa.com/images/editor/files/39480118659.pdfIn PDF document text
    • https://barrierball.cl/ckfinder/userfiles/files/rogir.pdfIn PDF document text
    • http://lightningriskassessment.com/ci/userfiles/files/89613715718.pdfIn PDF document text
    • http://garmaclima.com/uploads/ckfinder/files/jisivenik.pdfIn PDF document text
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/16134eb4b2778a---seroguvadeseribimo.pdfIn PDF document text
    • https://mkontakt.com/dat/file/mivudakafujazunuxuwinafo.pdfIn PDF document text
    • http://ck-buhgalter.ru/userfiles/file/dakamopejozesizode.pdfIn PDF document text
    • http://e68momo.com/shopadmin/upload/files/34298581149.pdfIn PDF document text
    • https://sandp-engineering.com/ckfinder/userfiles/files/66709710743.pdfIn PDF document text
    • http://studioambienteterritorio.it/userfiles/files/xebitatojovurederipata.pdfIn PDF document text
    • http://ilovestory.com/upload/file/63014386263.pdfIn PDF document text
    • https://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/95491082345.pdfIn PDF document text
    • https://loctra.net/userfiles/file/74391798816.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c4e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4E3 18276 bytes
SHA-256: bd4a7de9f50d5d2cb48f848ce0c188c094599df5585a23d8671f77803e6ddcbc
font_01_sfnt_off0000f35a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF35A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010b71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B71 10304 bytes
SHA-256: e280278885c132f6c07c7aeb46a0af1db2ae9cdfa0105c30b8437c5751bc57a5