Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d00e11baba7ddf…

MALICIOUS

PDF

69.7 KB Created: 2021-09-26 02:00:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-27
MD5: 0e1c7d6d8254d0eee1741714a5c694e8 SHA-1: 7b55570a16c5cb25e8115f206d35e2f740a405ca SHA-256: c5d00e11baba7ddf8ef7ca37b029b0a8623868af3c82c56939abf2a467d0a420
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9916

Heuristics 7

  • 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.
  • 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 https://debden.org/userfiles/file/ In PDF document text
    • http://archissimo.eu/userfiles/files/zeremanivinarame.pdfIn PDF document text
    • http://yjccnc.com/upload/files/zofozenagatu.pdfIn PDF document text
    • https://epagneuls-bretons.fr/caningest/images/file/1552841469.pdfIn PDF document text
    • https://cashcruis.ru/wp-content/plugins/super-forms/uploads/php/files/d7cb06db3db14f2ddf38cbf9411610a0/26483535767.pdfIn PDF document text
    • http://farmaciacogliate.it/userfiles/files/nepunopanujelugasepuvabox.pdfIn PDF document text
    • http://bigbazar.cz/is/images/FCKeditor/File/27095910700.pdfIn PDF document text
    • http://kubkao-kubpla.com/userfiles/files/55883007100.pdfIn PDF document text
    • http://ky-auto.com/uploadfile/files/67669843072.pdfIn PDF document text
    • http://smarttechsolutionukltd.com/uploaded_files/userfiles/files/bawupoxanesipu.pdfIn PDF document text
    • http://top-caster.com/userfiles/file/xumogivebavol.pdfIn PDF document text
    • http://wrtour.com/FileData/ckfinder/files/20210922_F2D28405E879FA0D.pdfIn PDF document text
    • https://www.hosotte.com/ckfinder/userfiles/files/sukufuzasezisupikuzeliv.pdfIn PDF document text
    • http://www.novosib-sport.ru/ckfinder/userfiles/files/gilexibagav.pdfIn PDF document text
    • http://gaishachuukobuhin.com/js/upload/files/83890139302.pdfIn PDF document text
    • http://www.psyforyou.nl/upload/fckeditor/file/vaxixavud.pdfIn PDF document text
    • https://tort-art.ru/userfiles/file/22709745901.pdfIn PDF document text
    • https://learningsolution.ca/userfiles/files/kudofiwubetevunus.pdfIn PDF document text
    • https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/c7d6fb96699e18d67b454759e389a0bf/kodaxogixikuzofow.pdfIn PDF document text
    • https://kisikana.hr/UserFiles/files/3693245272.pdfIn PDF document text
    • https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/8c4964075762eae91271088a20d7133a/lekafamokijabufuz.pdfIn PDF document text
    • http://hondatayho.top/img-ngocbao/files/reneminaxufinoxetutoza.pdfIn PDF document text
    • http://peknanevesta.sk/media/file/roxetizilifiluk.pdfIn PDF document text
    • http://telegid.tv/userfiles/file/mowegefupetuxij.pdfIn PDF document text
    • http://annabarons.lv/files/files/dunasujexopuwalarosulumox.pdfIn PDF document text
    • https://mertlakustika.cz/images/pages/file/88977454897.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=rocket+vpn+freePDF 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_off0000b53c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB53C 10208 bytes
SHA-256: ff5054081ac60c100914b30b6fd58b7a2aae25feb5829ea559ef936d9b9917d8
font_01_sfnt_off0000cc54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC54 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e466.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE466 14772 bytes
SHA-256: eaeb0a9b357f1543fa045c1fc94200806fb18f1882021170659074e35322029d