Malicious PDF — malware analysis report

Static analysis result for SHA-256 5521c4e10ea3ba6c…

MALICIOUS

PDF

300.2 KB Created: 2022-03-12 21:56:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-20
MD5: 875f4c507056081c0fa438d299b4f213 SHA-1: d879cdb604239829347b72e5dd09ca78d704555e SHA-256: 5521c4e10ea3ba6cb980f88cc87d4390eb4db4f12facb78600b3a8bbeb391eb4
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7849

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://colod.co.za/XSRYdR1H?utm_term=chota+don+comedy+full+movie PDF link annotation
    • http://istanbulballoons.com/ckfinder/userfiles/files/kikelonutenavoviloxure.pdfIn PDF document text
    • http://www.gastroblanik.cz/upload/files/monudipigedi.pdfIn PDF document text
    • http://synthecinter.com/userfiles/files/11255693200.pdfIn PDF document text
    • http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/16205a6a4c38db---61270294655.pdfIn PDF document text
    • http://safakkereste.com/kcfinder/upload/files/66903923552.pdfIn PDF document text
    • http://pscworld.eu/ckfinder/userfiles/files/25891334447.pdfIn PDF document text
    • http://bukitjaya88.com/kcfinder/upload/files/44530239182.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621610e9f3046---53111747062.pdfIn PDF document text
    • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/3c98ecaf18e4ee8c9e9587ad806305de/69401472477.pdfIn PDF document text
    • http://osingenieria.com/images/admin/file/84875703989.pdfIn PDF document text
    • http://dinhvi5s.com/images/newtech/files/3727207479.pdfIn PDF document text
    • https://www.sherpachristain.org.np/ckfinder/userfiles/files/darorunuzijorenavirum.pdfIn PDF document text
    • http://www.likoda.com.tw/upload/ckimg/files/17079761787.pdfIn PDF document text
    • http://solee.cn/ckfinder/userfiles/files/damow.pdfIn PDF document text
    • http://ap116.ru/userfiles/file/61154590574.pdfIn PDF document text
    • http://www.sindcomerciarioscs.org.br/adm/kcfinder/upload/files/57452497130.pdfIn PDF document text
    • http://www.comhairleuladh.com/uploads/files/sirowugugadikese.pdfIn PDF document text
    • http://hrt-foto.hu/_user/file/kolexubaboferiwobufada.pdfIn PDF document text
    • http://paoladebenedetti.eu/userfiles/files/16900382312.pdfIn PDF document text
    • http://goksirlambinowice.pl/img/upload/files/39612381135.pdfIn PDF document text
    • http://newworldss.com/uploads/file/kajunagitikixebudi.pdfIn PDF document text
    • https://edouardweil.com/userfiles/file/gitosarezidufugekex.pdfIn PDF document text
    • https://careerexpo.alljobsinliberia.com/ckfinder/userfiles/files/66601365272.pdfIn PDF document text
    • http://loscogliodifavignana.it/userfiles/files/dulijosunulasalabipobod.pdfIn PDF document text
    • http://heatexchangersolution.com/upload_fck/file/2022-2-23/20220223180233298719.pdfIn PDF document text
    • http://karimeh.com/public/userfiles/file/725057997.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 extracted file (font_00_sfnt_off00044260.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00044260.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00044260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44260 10784 bytes
SHA-256: 3057a58017fa024510af48d1a1690973914cc160000c2441ae62e768bee7fefd
font_01_sfnt_off00045b12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45B12 18668 bytes
SHA-256: 4b24b1e66734a5df5e05aca04f35b8273285be16abc4031b8a4a91ffbc2859f1
font_02_sfnt_off00048b5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48B5D 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9