Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e30ecfe0433e45e…

MALICIOUS

PDF

144.9 KB Created: 2021-10-12 02:46:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 6569f65312e2760cb052cd941b3bd22b SHA-1: 4b203a5eb3d7322b3dc25c7329b1e70366552fc3 SHA-256: 4e30ecfe0433e45e4cbf979ce72c47d38a34b369cbd479f17035cbf187ec3131
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://bibikid.ru/upload/muxazudo.pdf In PDF document text
    • http://hotelniagararimini.eu/userfiles/files/dowusugoxan.pdfIn PDF document text
    • http://sakulchaiplace.com/Uploads/file/sigomuvukokijopo.pdfIn PDF document text
    • http://vietsinphar.com/uploads/files/kuvijolekuxupul.pdfIn PDF document text
    • https://manisafar.com/basefile/marcosafarir/files/24475886737.pdfIn PDF document text
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16161f72b8ca5a---65452243332.pdfIn PDF document text
    • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/2ef0c397a0e5732d668de1cfcbd179e5/kagew.pdfIn PDF document text
    • http://fields-on-earth.com/images/blog/file/34474624978.pdfIn PDF document text
    • https://chennothinterios.com/uploads/file/38986384260.pdfIn PDF document text
    • http://alothongtin.com/upload/FCK/file/7819386263.pdfIn PDF document text
    • http://111-orte.de/testarea/cwsCMSlight/media/files/kevogaguke.pdfIn PDF document text
    • https://nibrasimansch.com/userfiles/files/18945521505.pdfIn PDF document text
    • https://thietbivesinhanhhuy.com/asset/files/bitowebemijivozi.pdfIn PDF document text
    • https://linlinline.biz/js/ckfinder/userfiles/files/72945811255.pdfIn PDF document text
    • https://eventpro-kontraktorpameran.com/uploaded/files/99012168158.pdfIn PDF document text
    • https://mariapolis.net/ckfinder/userfiles/files/18824323208.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144a1a8303a0---zejitubadekolapo.pdfIn PDF document text
    • http://www.teaterskolen-efteruddannelsen.dk/ckfinder/userfiles/files/tibewunugerep.pdfIn PDF document text
    • https://madeirashopping.com/userfiles/file/fasezetopapekaxabo.pdfIn PDF document text
    • http://www.jfac.kr/ckfinder/userfiles/files/89418246553.pdfIn PDF document text
    • http://palletgoanloi.com/img-dn/files/tilevow.pdfIn PDF document text
    • http://uralinteh.com/uploads/files/96090548769.pdfIn PDF document text
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/86131868f5b73d71dd53f8d3bb41e419/39365079196.pdfIn PDF document text
    • http://back2wood.de/userfiles/file/faxomigojexitusibaxawizos.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/23D8k0Ec_6w/uplcv?utm_term=mechanical+vibrations+theory+and+applications+si+edition+solution+manualPDF 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_off0001c4df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C4DF 23984 bytes
SHA-256: 31e430b6783e3b75a4be2328119cfc1f8a1d46e9d1c61da00ffbf449d4f5c906
font_01_sfnt_off000202b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x202B3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00021aca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21ACA 11192 bytes
SHA-256: 84ba9f18fca7760257fb43ebc7d9c9402056c1c45fba90f549c401899ab639ed