Malicious PDF — malware analysis report

Static analysis result for SHA-256 4879372452cc8448…

MALICIOUS

PDF

245.4 KB Created: 2022-03-14 21:56:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-21
MD5: 4a2e48af3389488d53b803f8097cb67b SHA-1: 280612b3cd0e86d413b6013734a8a1a23dc00cf5 SHA-256: 4879372452cc8448c95412eb5f96d16a11bbb2a6d0a337079ed4e1f553d88125
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8214

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
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.
  • 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://ragaz.co.za/XSRYdR1H?utm_term=banana+fish+op PDF link annotation
    • http://szintai.hu/ckfinder/userfiles/files/25028396993.pdfIn PDF document text
    • http://wignaccent.com/FCKeditor_2.6.3/userimages/file/20220201023339.pdfIn PDF document text
    • http://poiskvod.ru/images/file/muwubojobuloxiw.pdfIn PDF document text
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/dvjjjd4t81sbao6lbif8h6hl72/86914045726.pdfIn PDF document text
    • https://animalplus.hilariousworld.com/nouvelles/files/12003742466.pdfIn PDF document text
    • http://pecsimutargygaleria.hu/files/file/sokipulevide.pdfIn PDF document text
    • http://kleinschaden-expert.com/userfiles/file/12100434952.pdfIn PDF document text
    • https://istanbularicilikfestivali.com/upload/ckfinder/files/75575296017.pdfIn PDF document text
    • http://eapver.com/upload/ckimg/files/202202200304223423.pdfIn PDF document text
    • http://ep9.cz/kcfinder/upload/files/zudowamorerariz.pdfIn PDF document text
    • http://mvsexpo.ru/admin/ckfinder/userfiles/files/46017976033.pdfIn PDF document text
    • http://www.sindcomerciarioscs.org.br/adm/kcfinder/upload/files/nejokite.pdfIn PDF document text
    • http://alrabbancapital.com/file/files/88950831709.pdfIn PDF document text
    • http://cgemfoco.com.br/ckfinder/userfiles/files/goguvafixolomuwufe.pdfIn PDF document text
    • http://yanlixin.com/UserFiles/file///45962117310.pdfIn PDF document text
    • http://nobody-films.com/bpms/includes/fckeditor_uploads/userfiles/file/nudusebazesadawotopeleriz.pdfIn PDF document text
    • http://naturestuff.nl/siteimages/file/86515897782.pdfIn PDF document text
    • http://electriccityusa.com/images/fck_uploads/file/tupekagojijele.pdfIn PDF document text
    • http://grafika.szklo-lux.pl/nowa/userfiles/file/kolaju.pdfIn PDF document text
    • https://bipalisdemo.dashindonesia.com/userfiles/files/zukozabakisukul.pdfIn PDF document text
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/fs64bv8kpjgqs27scbav28hqm5/89384331690.pdfIn PDF document text
    • http://hunicorn.hu/userfiles/file/raruku.pdfIn PDF document text
    • http://xn--zb0bw3kv4s8mn.com/upload/fckeditor/file/jibumolukotedenik.pdfIn PDF document text
    • http://crystaltrade.hu/data/file/mebidudizuxulobukun.pdfIn PDF document text
    • http://varnamonarradio.se/admin/kcfinder/upload/files/13518684251.pdfIn PDF document text
    • http://ahkkpcm.org/userfiles/dibakelut.pdfIn PDF document text
    • http://www.artefuoricentro.it/js/lib/ckfinder/userfiles/files/wukuzaguloro.pdfIn PDF document text
    • https://henseltech.cz/userfiles/file/67929637339.pdfIn PDF document text
    • https://eastmangroup.org/ckfinder/userfiles/files/67081886437.pdfIn PDF document text
    • https://eric-parnes.com/ckfinder/userfiles/files/wewebasisunotod.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_off000368a5.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000368a5.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000368a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x368A5 10132 bytes
SHA-256: 37654acfdf9ee0696bd790bbc90c340805279063cf89d7075513f6309b10bcdf
font_01_sfnt_off00037f2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37F2F 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0003964a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3964A 18724 bytes
SHA-256: 28a444ea3d5a999cca587b936e68d492903ee142f3385dae16192e875c278b64