Malicious PDF — malware analysis report

Static analysis result for SHA-256 209ee3cdd48d3472…

MALICIOUS

PDF

79.7 KB Created: 2021-06-26 11:42:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: cb4ff2440e3859d694dd636e809629d3 SHA-1: 22ac21cb76b517a4e2a270fe73b0974188a598ef SHA-256: 209ee3cdd48d3472cdea9a50daa51db22f1605383bbee8847fcb85a6f2f501e2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links pointing to various websites, many of which are hosted on compromised CMS platforms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it functions as a link farm to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

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://huntic.ru/uplcv?utm_term=how+to+graph+a+function+in+mathematica PDF link annotation
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/703cfea48b827178c4cc10ee60d3f13c/sabapikola.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609d7e41a03fd---nokofakiw.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af46a4d3399---47199835982.pdfIn PDF document text
    • http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/ae998ced68676edd533132fea658f1b5/21580283919.pdfIn PDF document text
    • https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/a788847732edb2e174859f3a7dece773/migegasaxosaki.pdfIn PDF document text
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fbcb0f11c7---vopajemidexo.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adb083b3290---newasafuvedezunife.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f3da48b7f8---zenudomozomukupikudivok.pdfIn PDF document text
    • http://rotang.net/userfiles/file/20060863765.pdfIn PDF document text
    • http://travelport.pl/userfiles//file/23155101229.pdfIn PDF document text
    • http://rustproofingottawa.com/userfiles/file/jupipakapejomezumepubudok.pdfIn PDF document text
    • https://wecareprogram.org/images/file/zevurezavajepew.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/kroqjosgh5sa9vh0pcjulasv71/tifafalelevelexo.pdfIn PDF document text
    • https://namhunglogistic.vn/site/files/medemozokivudixaju.pdfIn PDF document text
    • http://businessvaluationapp.com//fck_files/file/wonebijajanakamikiwuv.pdfIn PDF document text
    • https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/073175027f9d8e11b8d9de7886079198/tenisuvorilirejipovi.pdfIn PDF document text
    • https://mn-lawfirm.com/box/userfiles/file/66593967820.pdfIn PDF document text
    • http://kahounova.cz/userfiles/file/rojejazawidajozujuwo.pdfIn PDF document text
    • http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160842afb7b416---7738264283.pdfIn PDF document text
    • http://automsystem.com/UploadFile/file/20210522124243044.pdfIn PDF document text
    • http://gtshotel.it/images/file/tilifinogekunadogodiluf.pdfIn PDF document text
    • http://aelma.com/sites/default/userfiles/file/xegap.pdfIn PDF document text
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/160caae3904761---gufiwapi.pdfIn PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160713f18d12e6---68251825590.pdfIn PDF document text
    • http://ucinnovation.ru/admin/ckfinder/userfiles/files/67524754192.pdfIn PDF document text
    • https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/a5c31cdfa28603791a7e51a4fc688ef9/88324851842.pdfIn PDF document text
    • https://skyzoan.com/cake/beta/userfiles/file/geviwekawixepad.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_off0000cf46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF46 17688 bytes
SHA-256: 094ed4130fecc01f7c1bbb06ee6976a4099859d6c22a390f97c78dbede77e666
font_01_sfnt_off0000fe39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE39 10892 bytes
SHA-256: dc67e40915cd693e0418411e4cc77cac98313f00bf8eb968dfddaef9d9f0c1a9
font_02_sfnt_off00011749.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11749 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1