Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d10a229051872e…

MALICIOUS

PDF

829.2 KB Created: 2022-03-25 15:15:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-27
MD5: bc2604dfaf2d1e1e4e51aa2d92e5e308 SHA-1: ee40298291a9d44d634fcbf2a1220aa0d08b337b SHA-256: c5d10a229051872eb66e5724e29ce5274c41a10cd21879841c6b081b4c0a1a51
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3064

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://yubit.co.za/XSRYdR1H?utm_term=surah+al+mulk+download+pdf PDF link annotation
    • http://waheedullahauto.ae/admin/kcfinder/upload/files/99756639625.pdfIn PDF document text
    • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/f0f827574b725f0d92db7be572998a4c/34818325710.pdfIn PDF document text
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/16224db8613749---27472644026.pdfIn PDF document text
    • https://dom4m.de/userfiles/files/67917753259.pdfIn PDF document text
    • https://suavitinhtannha.net/upload/files/kilogulituduvitonimufidug.pdfIn PDF document text
    • https://medcogulf.com/uploads/file/54596860352.pdfIn PDF document text
    • http://tiquital.com/documentos/file/wakil.pdfIn PDF document text
    • https://ldcpc.com/ckfinder/userfiles/files/32660832914.pdfIn PDF document text
    • http://seteo-dechets.com/images/file/lolepatokibal.pdfIn PDF document text
    • http://kimwendelldesign.com/ckfinder/userfiles/files/33303143651.pdfIn PDF document text
    • http://bernievet.ro/kcfinder/upload/files/vipezezokukakubirifo.pdfIn PDF document text
    • http://ceresasrl.it/userfiles/files/67087875946.pdfIn PDF document text
    • http://pensjonatagat.pl/userfiles/file/zezeretusumomipopanobim.pdfIn PDF document text
    • http://355353.ru/userfiles/file/12423151359.pdfIn PDF document text
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/1621b389e95354---gapubesikesejowezarasuta.pdfIn PDF document text
    • http://turningpointdigital.com/cote_dor_import/admin/ckfinder/userfiles/files/zaviminoviralin.pdfIn PDF document text
    • https://apelhijau.com/contents/files/49715756595.pdfIn PDF document text
    • http://korvet-sp.ru/userfiles/file/sezoj.pdfIn PDF document text
    • http://whitedwarf.ru/public/images/ckfinder/files/kasivivoralipapowelikiv.pdfIn PDF document text
    • http://hysansam.com/fckeditor/userfiles/image/jadamesumu.pdfIn PDF document text
    • https://santeh.md/img/files/bawopexezodamifalat.pdfIn PDF document text
    • http://www.oe.com.tw/ezadmin/ckfinder/userfiles/files/zumemiwazujofapoguxizekuz.pdfIn PDF document text
    • http://apisicul.com/userfiles/files/kusolukevebidozabepukozu.pdfIn PDF document text
    • https://seitonsolutions.com/ci/files/zuwonofomuluj.pdfIn PDF document text
    • http://chmer.yun2u.com/upload/files/86390492734.pdfIn PDF document text
    • https://ewastexperts.com/userfiles/files/18244302246.pdfIn PDF document text
    • http://kusistoconstruction.com/userfiles/file/wadosoranuvafonobaror.pdfIn PDF document text
    • http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622e471e99905---tukiwix.pdfIn PDF document text
    • http://miu.by/userfiles/rowato.pdfIn PDF document text
    • http://ocalsandalye.com/panel/kcfinder/upload/files/60672108400.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_off000c8100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8100 20572 bytes
SHA-256: 65e6106da44ef364b63e2f1990893ed9615bc9162ed6f39dc9e6e2130f30d389
font_01_sfnt_off000cb68d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB68D 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off000ccdad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCDAD 10628 bytes
SHA-256: dfeee9bf8fdda6153d8051548e95cb6bd80afe176364ba1e5c0edbbc5de1b7fc