Malicious PDF — malware analysis report

Static analysis result for SHA-256 b61cddcb2de5b80b…

MALICIOUS

PDF

238.5 KB Created: 2022-04-05 08:46:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-15
MD5: 5526af58c5df23b1e86f320c5f69caeb SHA-1: 792b99be247faa00d7c4da33311dea886a1b892e SHA-256: b61cddcb2de5b80bb84d79772c0d5d93aec364e928480fcb26b769cbdfa1a33c
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6275

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 https://gstudiomusic.com/admin/kcfinder/upload/files/57267861821.pdf In PDF document text
    • http://mebizstekla.ru/userfiles/file/livap.pdfIn PDF document text
    • https://yesilkoyluleriz.biz/resimler/files/7377474501.pdfIn PDF document text
    • https://tatefazaseg.weebly.com/uploads/1/3/4/0/134016926/5654940.pdfIn PDF document text
    • http://melody-house.ru/kcfinder/upload/files/ranevetugapolotezereve.pdfIn PDF document text
    • http://mptech.vn/ckfinder/userfiles/files/tutarewolanetukexo.pdfIn PDF document text
    • https://wilulesutazi.weebly.com/uploads/1/3/3/9/133997377/budezegokowegoxu.pdfIn PDF document text
    • http://okna-stv.ru/userfiles/files/powoputivigunagupimopil.pdfIn PDF document text
    • https://mithaiwala.uk/dayafter/uploadimages/newsimages/file/diwetubul.pdfIn PDF document text
    • http://changzhou.chinatupai.com/web/js/ckfinder/userfiles/files/29672006541.pdfIn PDF document text
    • http://nasledie-sluck.by/var/upload/file/tumesulogumenutuleminu.pdfIn PDF document text
    • http://sparan-art.ru/ckfinder/userfiles/files/93817789018.pdfIn PDF document text
    • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1623b383a3f5f0---pimifizozegujinaxisix.pdfIn PDF document text
    • https://rumuxino.weebly.com/uploads/1/3/5/3/135324707/sazofu.pdfIn PDF document text
    • https://horacebatten.com/ckfinder/userfiles/files/7245005967.pdfIn PDF document text
    • http://www.omniasubventio.sk/admin/ckeditor/kcfinder/upload/files/13634578037.pdfIn PDF document text
    • http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/k8mp7gsu82va5iep5mkqcd3uj7/195745842.pdfIn PDF document text
    • https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1623bde1a01a5f---najureropa.pdfIn PDF document text
    • https://costabravas.com/uploads/localidades/files/6027401795.pdfIn PDF document text
    • https://libertavoyages.com/kcfinder/upload/files/18233525592.pdfIn PDF document text
    • https://toshibacozum.com/panel/kcfinder/upload/files/42266813957.pdfIn PDF document text
    • http://chiangmai-esc.net/user_img/files/21221715895.pdfIn PDF document text
    • https://bibliotheque.ville.deux-montagnes.qc.ca/ckfinder/userfiles/files/jemila.pdfIn PDF document text
    • https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/16246297daa487---pixijifarabele.pdfIn PDF document text
    • http://gift-founder.com/archive/upload/files/77445497058.pdfIn PDF document text
    • http://privatmajo.sk/upload/files/45355242032.pdfIn PDF document text
    • https://nuttydog.hu/ckfinder/userfiles/files/bemawiwopulumawujije.pdfIn PDF document text
    • https://wanfutemple.urwaydesign.com/data/file/userfiles/files/55976219636.pdfIn PDF document text
    • http://sor1310.com/userfiles/file/javovufikariletaruzu.pdfIn PDF document text
    • https://rujikanonige.weebly.com/uploads/1/3/1/8/131872107/a2c59c94ef.pdfIn PDF document text
    • http://zsdbiopharm.com/upload/files/82347841656.pdfIn PDF document text
    • https://privatdaniela.sk/upload/files/22354095741.pdfIn PDF document text
    • http://jirout-truhlarstvi.cz/upload/files/33558923.pdfIn PDF document text
    • https://maleki-group.ir/js/kcfinder/upload/files/naniravukom.pdfIn PDF document text
    • http://techdiligence.net/assets/kcfinder/upload/files/xadubezuvaxifojipukep.pdfIn PDF document text
    • http://etoprosto.ru/ckfinder/userfiles/files/sevefebuzaxidulesix.pdfIn PDF document text
    • https://marthomaktrplrdiocese.org/ckfinder/userfiles/files/58412223614.pdfIn PDF document text
    • https://certifiedcollisionrepair.com/home/cert/public_html/ckfinder/userfiles/files/31163583135.pdfIn PDF document text
    • https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1624812947b58d---41520185376.pdfIn PDF document text
    • http://paolacaone.eu/userfiles/files/vesonuza.pdfIn PDF document text
    • https://podar.co.za/XSRYdR1H?utm_term=11.+s%C4%B1n%C4%B1f+fizik+vekt%C3%B6rler+konu+anlat%C4%B1m%C4%B1PDF 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_off000348ab.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000348ab.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000348ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x348AB 10972 bytes
SHA-256: 34204751078ae370d20f51b99846e4cfa65c11e563993d5f8dba66ea8820f2c3
font_01_sfnt_off000361c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x361C8 18396 bytes
SHA-256: 76fee28c03021fdc9f57b16ef08a73c91998668df367ec18412a52ebc5cdfd2d
font_02_sfnt_off00038ee5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38EE5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1