Malicious PDF — malware analysis report

Static analysis result for SHA-256 550710f8e06c4fc1…

MALICIOUS

PDF

451.2 KB Created: 2022-02-03 15:09:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-04
MD5: ef6341bb81e12007490d7689096aa087 SHA-1: b5efbcfcca271475ae3f4c84b9656c3377dea67a SHA-256: 550710f8e06c4fc113d88ed58b4f18e62b90791109779a0d6dfa93315a3116ea
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5342

Heuristics 8

  • 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.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://bisnismedsos.com/userfiles/file/73385271382.pdf In PDF document text
    • http://185.33.116.145/~acus01/upload/files/87538619932.pdfPDF link annotation
    • http://birizgardenhotel.com/userfiles/file/risivizalomupuj.pdfIn PDF document text
    • http://itcbeautytrainingschool.com/userfiles/file/5694894679.pdfIn PDF document text
    • https://www.vek-bg.com/app/templates/js/ckfinder/userfiles/files/kukaworovedowenadodulu.pdfIn PDF document text
    • https://tolgyesvolgy.hu/userfiles/file/43319829548.pdfIn PDF document text
    • https://infosantiere.ro/userfiles/file/jobagowezevetenuwij.pdfIn PDF document text
    • http://xn--b1adbbbaeqjtsflbfms0e.xn--p1ai/pict/file/katizidur.pdfIn PDF document text
    • http://jindi2010.com/uploadfile/files/xedidodozeniwud.pdfIn PDF document text
    • http://jolanyee.com/upload/files/202109190422132246.pdfIn PDF document text
    • http://belovosushi.ru/files/607973808.pdfIn PDF document text
    • https://www.oasipizza.it/wp-content/plugins/formcraft/file-upload/server/content/files/16133f8db0c274---xorasasusugori.pdfIn PDF document text
    • http://snc.easy-event.net/img/uploads/files/fijobufuwaz.pdfIn PDF document text
    • http://dolinakrzeptowa.pl/public/upload/ckfinder/userfiles/files/58068941698.pdfIn PDF document text
    • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/f3d3b2522bae83f5746ed7828e952ff2/70229446141.pdfIn PDF document text
    • http://vititanon.com/user_img/files/42499288981.pdfIn PDF document text
    • https://lifesmart.lifesmart.ro/ckfinder/userfiles/files/jujilowezil.pdfIn PDF document text
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/fe08bfbc8e9709047a780947271d2cf8/55772613859.pdfIn PDF document text
    • https://sim2007.com/files/49681345350.pdfIn PDF document text
    • http://www.logistiekverbeteren.nl/ckfinder/userfiles/files/domesukorix.pdfIn PDF document text
    • https://aneri12.cz/res/file/2842495726.pdfIn PDF document text
    • http://novelinternationalschool.com/ckfinder/userfiles/files/86080961819.pdfIn PDF document text
    • http://anabakorea.jp/userfiles/file/50858930715.pdfIn PDF document text
    • https://i-try.tw/upfile/files/2021/11/08/70477032471.pdfIn PDF document text
    • http://dopuskvsro.ru/UserFiles/47846712903.pdfIn PDF document text
    • http://dobryremont.pl/ebobas/portal/app/webroot/img/tmp/file/16339126103707.pdfIn PDF document text
    • http://pasted-radio.de/web/files/nametolapibivo.pdfIn PDF document text
    • http://xn--90afqerdlt1f.xn--p1ai/admin/ckfinder/userfiles/files/sibipalopuzexinog.pdfIn PDF document text
    • https://relaxbotanika.cz/ckfinder/userfiles/files/61985245148.pdfIn PDF document text
    • https://journeywithmypet.com/ckfinder/userfiles/files/detisewixiwefadogimosi.pdfIn PDF document text
    • https://literie-depot.fr/UserFiles/file/86059744338.pdfIn PDF document text
    • https://groupunsur3.com/contents/files/vuxesojemudafomisoxe.pdfIn PDF document text
    • http://sammyurias.com/userfiles/files/kejasuwaxadokobeveru.pdfIn PDF document text
    • http://trineckevzdelavani.cz/webpagebuilder/ckfinder/userfiles/files/bunekanegomezotiw.pdfIn PDF document text
    • https://loheb.co.za/XSRYdR1H?utm_term=3+bedroom+apartment+floor+plans+pdfPDF link annotation
    • 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_off0006a15e.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0006a15e.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0006a15e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A15E 16968 bytes
SHA-256: a27cdecf42fc595e83a2d122a53fc78fe8a8fb6c600a8728c75072719fddef5e
font_01_sfnt_off0006cd6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD6F 10784 bytes
SHA-256: 9d949be5e882e367c44acdb8fa74fec44c919ed55816f1484b25f9f7b999ad6b
font_02_sfnt_off0006e608.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E608 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9