Malicious PDF — malware analysis report

Static analysis result for SHA-256 8472d26bfa1e4d77…

MALICIOUS

PDF

268.3 KB Created: 2022-03-20 22:08:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-05
MD5: ade0d47e07a8aba6e5aba7ed407bafa6 SHA-1: 99b0b84129fb05946c32770faba774cb83c72d20 SHA-256: 8472d26bfa1e4d7751eedfa4a9e3d0da0d56d74933ddb8d028c251ddf63fc3fb
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6731

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • 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://hidramaco.com/files/files/kovalarikasex.pdf In PDF document text
    • http://image.dlib.vn/libedu/news/bvu/20220311/file/bijusujizexivoserivoz.pdfIn PDF document text
    • https://benqmusicworkshop.com/fupload/file/zekuduxisarudis.pdfIn PDF document text
    • http://kantoromega.pl/userfiles/file/buniwujuna.pdfIn PDF document text
    • https://surupaceanu.ro/ckfinder/userfiles/files/69951283292.pdfIn PDF document text
    • https://tekartltd.com/upload/files/28979494900.pdfIn PDF document text
    • https://vjlabor.pitscovn.com/uploads/Upload/files/81266848392.pdfIn PDF document text
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1620b7675d1aa0---dusesawotefazenuvevajib.pdfIn PDF document text
    • http://bharatdarshan.net/rgroup/ckfinder/userfiles/files/69452733203.pdfIn PDF document text
    • http://zrdb-drogbud.pl/Upload/file/bifinafiwojulafuguva.pdfIn PDF document text
    • http://elma-itc.ru/!upload/files/99972855680.pdfIn PDF document text
    • http://splhardware.com/UploadFile/file/2022030702152373499.pdfIn PDF document text
    • http://agdakademi.com/img/files/fadolex.pdfIn PDF document text
    • https://wildarium.com/ckfinder/userfiles/files/55474692698.pdfIn PDF document text
    • http://deryalvincotokurtarma.com/userfiles/file/45155331737.pdfIn PDF document text
    • https://fallsplat.se/bildbank/file/rejakeken.pdfIn PDF document text
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/1622a3b3972c66---94069874029.pdfIn PDF document text
    • https://auditorescr.com/ckfinder/userfiles/files/xefutijapeva.pdfIn PDF document text
    • http://uitvaartverzorgingsindex.nl/images/uploads/modujowakopexazi.pdfIn PDF document text
    • http://myrbacken.se/login/ckfinder/userfiles/files/61427939711.pdfIn PDF document text
    • http://status-go.net/gfx/userfiles/files/35094172587.pdfIn PDF document text
    • https://rhkapadia.org/Admin/plugins/kcfinder/upload/files/pewanema.pdfIn PDF document text
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/162136e7134dcb---42446486699.pdfIn PDF document text
    • http://studioguidobarbieri.it/userfiles/files/27633084711.pdfIn PDF document text
    • http://kawarulabo.com/app/webroot/js/kcfinder/upload/files/migotimoj.pdfIn PDF document text
    • https://ceramicasvillaflor.cl/UserFiles/File/pesexar.pdfIn PDF document text
    • http://3e3i.com/UserFiles/file///pelujuxezudilax.pdfIn PDF document text
    • http://afslab.asia/upload/files/xigixasidazaxuvogami.pdfIn PDF document text
    • http://herve-coiffure.ci/files/50471349953.pdfIn PDF document text
    • https://unique.global/wp-content/plugins/super-forms/uploads/php/files/70b0bf8794b084a14ded0102ab4c9d99/65571103744.pdfIn PDF document text
    • https://www.seminariosanpiox.it/ckeditor/kcfinder/upload/files/getovurexukazefejuki.pdfIn PDF document text
    • https://perfecthospitals.com/FCKeditor/file/52186854143.pdfIn PDF document text
    • https://norin.co.za/XSRYdR1H?utm_term=encephalitis+adalah+pdfPDF 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 extracted file (font_00_sfnt_off0003ba14.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003ba14.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003ba14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3BA14 21300 bytes
SHA-256: ad179724fe750f94b67e3161308152bfd87f8a41597bae52b4d73047aad44ef0
font_01_sfnt_off0003f189.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F189 10480 bytes
SHA-256: 286fdcfe4c33b3f71c1885c4b2113e6caaeb8bd82650332fcafd1d727a116064
font_02_sfnt_off00040938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40938 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9