Malicious PDF — malware analysis report

Static analysis result for SHA-256 4afefb8af90f9b17…

MALICIOUS

PDF

394.5 KB Created: 2022-03-09 14:05:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: e7034b8aa911f5a824435221ba6690ed SHA-1: 2f0ba50e14a2a4126d28f5f9f3acb40cf8cd0300 SHA-256: 4afefb8af90f9b171cf1d4922985d91c3acf2c17d4eabf4ad97479bb7f67380e
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7690

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://podar.co.za/XSRYdR1H?utm_term=hematology+mcq+with+answers+pdf PDF link annotation
    • https://rossbeede.com/userfiles/file/63135135932.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620a581771665---felatonosarafuperokopiz.pdfIn PDF document text
    • http://ambcavallon.eu/userfiles/files/93039240503.pdfIn PDF document text
    • http://www.armstrongre.com/files/files/51531569037.pdfIn PDF document text
    • http://www.assistvaleur.co.jp/inc/kcfinder/upload/files/safujilusupaduze.pdfIn PDF document text
    • https://sasalidayanisma.org/uploads/file/9784608224.pdfIn PDF document text
    • http://talani.nl/userfiles/image/file/jukopexadilirutuvivena.pdfIn PDF document text
    • http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/16215f48e58c14---kuwigaxirevarawatovisik.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1622358adf040e---fesawojozir.pdfIn PDF document text
    • https://luminex.pl/upload/file/78757776170.pdfIn PDF document text
    • https://www.governancaparaobrasil.com.br/kcfinder/upload/files/josisafuxatewebevojumi.pdfIn PDF document text
    • http://szboerzuo.com/upload/file/wefuwexupasi.pdfIn PDF document text
    • https://aydin-elektrik.com/resimler/files/61125177172.pdfIn PDF document text
    • http://immodraft.de/images/architekten_agentur_images_/file/46083005860.pdfIn PDF document text
    • https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/8a0938c64f98768c8ffa6846924e50a7/53465762423.pdfIn PDF document text
    • http://ktai.lmg.jp/upload/file/xosifukukozofenakovek.pdfIn PDF document text
    • http://bytip.net/filespath/files/20220203121449.pdfIn PDF document text
    • https://takipbizde.com/calisma2/files/uploads/tewuzam.pdfIn PDF document text
    • http://bikerslegion.leszno.eu/userfiles/file/55113272136.pdfIn PDF document text
    • http://www.corazondelsol.es/ckfinder/userfiles/files/jevapasivivakinon.pdfIn PDF document text
    • http://www.korsun.ic.ck.ua/js/kcfinder/upload/files/13645923354.pdfIn PDF document text
    • http://obkladlazby.cz/userfiles/file/98647107378.pdfIn PDF document text
    • http://owv-sad.de/userfiles/files/41796591800.pdfIn PDF document text
    • https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f8bc61298d2---bipanexikezopozibas.pdfIn PDF document text
    • https://mgs-on-track.com/uploads/misc/files/47303607860.pdfIn PDF document text
    • https://mp2020.csysadmin.com/ckfinder/userfiles/files/dokowekebolugepuxixibesad.pdfIn PDF document text
    • https://seedomoretravel.com/files/files/gaketakufe.pdfIn PDF document text
    • http://sxnqx.org/upload/file/Fl202202231047111528.pdfIn PDF document text
    • http://tagsu.com/attachments/fckattachments/file/50448712879.pdfIn PDF document text
    • https://minlinart.com/archive/upload/files/26433777288.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_off0005bae9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BAE9 17944 bytes
SHA-256: 51d916231426b3c5309d85a2af1d94f3881528e70f8d483cfeb934bf160a751a
font_01_sfnt_off0005e9dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E9DD 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off000600fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x600FD 11404 bytes
SHA-256: b37483524975d1446de7158123cf413cf3d568db51d7834b0c22fe27a626703c