Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af7cd4a1cb8797a…

MALICIOUS

PDF

319.4 KB Created: 2022-04-10 16:03:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 64ef5d78061cdebc0df07e183b02366d SHA-1: 14b8fb3258781670689184e76af76c606f020030 SHA-256: 4af7cd4a1cb8797a195304af30883fff24fc242b39324e98d6662638d13beacf
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7252

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://mifuj.co.za/XSRYdR1H?utm_term=puertas+logicas+basicas+ejercicios+resueltos PDF link annotation
    • http://onlineauadms.com/ci/userfiles/files/39706587252.pdfIn PDF document text
    • https://pupuwovojetisig.weebly.com/uploads/1/3/1/4/131438468/fobotuku.pdfIn PDF document text
    • http://www.mkkdigital.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1623447ef7d660---58629524587.pdfIn PDF document text
    • https://bwhe.in/ckfinder/userfiles/files/dinuvalalap.pdfIn PDF document text
    • https://kuxodebareku.weebly.com/uploads/1/3/4/0/134042390/a2e66ec6b3.pdfIn PDF document text
    • https://votexabutiru.weebly.com/uploads/1/3/4/7/134719371/6708684.pdfIn PDF document text
    • https://cristalparkhotel.com/ckfinder/userfiles/files/88189038462.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/16239a13abca37---66248743017.pdfIn PDF document text
    • https://milorem-service.ru/userfiles/file/tolaroda.pdfIn PDF document text
    • https://burgaseguros.com/userfiles/file/93524815549.pdfIn PDF document text
    • http://vaness-sens.fr/ckfinder/userfiles/files/devobiwegitule.pdfIn PDF document text
    • http://shop-cartuning.pl/userfiles/file/doxelunalore.pdfIn PDF document text
    • http://kbautotech.com/board/datafiles/imagefile/20236528018.pdfIn PDF document text
    • https://1000fdep.talenzsoftware.fr/upload/files/mazozizebaxiv.pdfIn PDF document text
    • https://sabatti.hu/admin/kcfinder/upload/files/74166986177.pdfIn PDF document text
    • http://kanoonkaraj.ir/dbmanager/filebank/htmlgallery/file///jirisupisusesuvumemo.pdfIn PDF document text
    • https://tp-pos.com/uploads/image/files/kefulilatakunini.pdfIn PDF document text
    • https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/7k5nev1pp6879tghrc829l4oei/38200636878.pdfIn PDF document text
    • https://sawuvuvexefiz.weebly.com/uploads/1/3/5/9/135964560/222190.pdfIn PDF document text
    • https://fp-088.flexxmedien.com/flexxtrader/data/usf/file/fujojusasopimule.pdfIn PDF document text
    • https://tefitosuwit.weebly.com/uploads/1/3/4/4/134478986/gosoxagaluki.pdfIn PDF document text
    • https://gupekuvexo.weebly.com/uploads/1/3/4/6/134610658/6a24970ed8e9.pdfIn PDF document text
    • http://traktor-tv.de/sites/default/files/file/ximetitifikisisemur.pdfIn PDF document text
    • https://jijaxiwiruba.weebly.com/uploads/1/3/5/3/135333012/vofubas_zusozuxepuma.pdfIn PDF document text
    • https://zelapagetuwuj.weebly.com/uploads/1/3/1/4/131406140/a2e1e2bacb20d.pdfIn PDF document text
    • http://liily.jp/upload/file/20220325014414.pdfIn PDF document text
    • https://jajamavufivaz.weebly.com/uploads/1/3/4/2/134235884/1523732.pdfIn PDF document text
    • http://zzzwchem.com/upload/files/75070174001.pdfIn PDF document text
    • http://sllight.ru/design/img/upload/file/fovedam.pdfIn PDF document text
    • http://www.psychophonie-tarbes.com/ckfinder/userfiles/files/kotorugidiletixosifujugik.pdfIn PDF document text
    • https://xixedemawib.weebly.com/uploads/1/3/0/7/130738641/sadaxovaj_danidozedolo_zuwawu.pdfIn PDF document text
    • https://danolanefute.weebly.com/uploads/1/3/4/8/134873411/7dea3ad207451.pdfIn PDF document text
    • https://migirebunimalab.weebly.com/uploads/1/3/1/3/131383914/767d60039de3.pdfIn PDF document text
    • https://xizidalubatud.weebly.com/uploads/1/3/4/5/134583516/5c6f755695.pdfIn PDF document text
    • https://gogreenonline.net/userfiles/image/fckeditor/file/88391060388.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_off00048268.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48268 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00049a7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49A7A 22580 bytes
SHA-256: 8f1fc457eed5b421f29d140cdf2fb518cf14582c237476d17fa8d641d7a33d1c
font_02_sfnt_off0004d33d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D33D 10672 bytes
SHA-256: cc56cfc7ae2e68630ac2218da0ab8ad5b269136abb30e80e22457717263bd6d6

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