Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8ddfdf53274c1e7…

MALICIOUS

PDF

359.4 KB Created: 2022-05-25 04:07:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-25
MD5: 27b2ca717fface214779dd4017c54e72 SHA-1: aedeec2f14a9813b79a766755e99f9be8194ddef SHA-256: c8ddfdf53274c1e79c32d93521751a46c53ccb7ff8c4733043e567ea5c8d14d6
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5742

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://sunuf.co.za/XSRYdR1H?utm_term=materi+lapisan+bumi+kelas+7+pdf+free+pdf+file+free PDF link annotation
    • http://uni-soar.com/userfiles/file/66813204582.pdfIn PDF document text
    • http://thepssmi.org/kcfinder/upload/files/dozibuvo.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/a3e61sb8cp529blrg7f88tv95a/71255867216.pdfIn PDF document text
    • http://elt-tm.uz/kcfinder/upload/files/82166234164.pdfIn PDF document text
    • https://badrivishal.com/media/7330612960.pdfIn PDF document text
    • http://sd-admin.fazendapenaazul.com/ckeditor/uploads/files/tumivakazodopalofez.pdfIn PDF document text
    • http://stoffelhoevetegelkachels.nl/userimg/file/wupibuborekuvidituwa.pdfIn PDF document text
    • https://internationalshipcare.com/upload/6971838493.pdfIn PDF document text
    • https://nitm.ac.in/nitmeghalaya/ckfinder/userfiles/files/nunagofibaruxab.pdfIn PDF document text
    • http://wcsps.com.tw/ckfinder/userfiles/files/74110935866.pdfIn PDF document text
    • https://mimpishio.com/contents/files/xomotemawo.pdfIn PDF document text
    • https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/af8a205b943820875e4fadc9b5231f50/pemewowetatuvefilewa.pdfIn PDF document text
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/fa0b1292179c231a249e663bca8f7679/40370426408.pdfIn PDF document text
    • https://temahr.hr/files/tutos.pdfIn PDF document text
    • https://metagrhyd.com/infopub/pub/file/nefakuvoledezasegokunupa.pdfIn PDF document text
    • http://specel.kz/app/webroot/js/kcfinder/upload/files/zorujewusaw.pdfIn PDF document text
    • http://antonioruizabogados.es/userfiles/file/zerasexunipixujimezu.pdfIn PDF document text
    • https://skopjemuzikon.pmgrecordings.com/ckfinder/userfiles/files/82574289573.pdfIn PDF document text
    • http://apotekatia.ba/fajlovi/mapowepipafimisesomafed.pdfIn PDF document text
    • http://atrsara.ir/resource/files/16653470664.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621ebbf3e32e1---movemev.pdfIn PDF document text
    • https://recrut.com/files/files/90806592584.pdfIn PDF document text
    • http://music-souq.com/uploads/file/xijitofogesezerowafo.pdfIn PDF document text
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1621b69bc10da9---dujotopinakomofe.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/162571e5eab522---99017370077.pdfIn PDF document text
    • https://lodoshosting.com/calisma2/files/uploads/6044539937.pdfIn PDF document text
    • https://www.cvr2021.scrs.in/kcfinder/upload/files/ruxanaligogigibuluwagaz.pdfIn PDF document text
    • http://www.matrixaviationfueling.com/assets/ckeditor/kcfinder/upload/files/91775578234.pdfIn PDF document text
    • http://serting.eu/userfiles/files/lawalirolulajin.pdfIn PDF document text
    • http://pasted-radio.de/web/files/30691464958.pdfIn PDF document text
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/1623ecfc83916a---73503731504.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/3gotmlsrvmiqbbe6rrdskal5v4/66460258592.pdfIn PDF document text
    • http://shortguycentral.com/ck_uploads/files/lofuzamolemoxakodidiv.pdfIn PDF document text
    • http://zdk-engels.ru/upload2/files/pisomopironeme.pdfIn PDF document text
    • http://www.bandicka.cz/upload/files/56509395608.pdfIn PDF document text
    • http://gaudi.tw/upload/file/35797163329.pdfIn PDF document text
    • http://www.sgpm.krakow.pl/aanewsysn/kcfinder/upload/files/ditefudev.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_off00053074.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00053074.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53074 10912 bytes
SHA-256: 512afb08180e75ae6499d9e1c52c795d4c0807151c6415b62f51363c0935ac97
font_01_sfnt_off0005497a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5497A 16736 bytes
SHA-256: bf5ef785d4d99655ec86bcab5ca3b5af978a2b036dd73bd161677d79b8f54f22
font_02_sfnt_off00057554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57554 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1