Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f5186c820187c7…

MALICIOUS

PDF

481.1 KB Created: 2022-03-07 08:12:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: fbd699146b435ec44066857251e1d202 SHA-1: 25e792c92d71effe83daaddda9a4b0fcc82625c0 SHA-256: a4f5186c820187c7979bb7a9578a644475b7b0420b934c54f1d2d343efd287fe
164 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4044

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 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.
  • 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://loheb.co.za/XSRYdR1H?utm_term=aryabhatiya+book+pdf PDF link annotation
    • https://khachsan295doson.vn/namthuan/images/news/files/papominiferiw.pdfIn PDF document text
    • http://xn--or3bi2da319p.com/upload/fckeditor/file/wuxumatifi.pdfIn PDF document text
    • https://so-photo.hu/images/fck/files/19564490645.pdfIn PDF document text
    • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/df5a53fab60b5b7411e2287f2a4a1bf4/jadam.pdfIn PDF document text
    • https://sportsfeats.com/app/webroot/js/kcfinder/upload/files/fakamipoxo.pdfIn PDF document text
    • http://csc0516.com/userfiles/file/20220224184707_zfkhpx.pdfIn PDF document text
    • https://leonardscopysystems.com/home/leonards/public_html/ckfinder/userfiles/files/12791010602.pdfIn PDF document text
    • https://transturist.ba/ckeditor/ckfinder/files/files/pivakepevexubumaxexov.pdfIn PDF document text
    • http://s2group.pl/userfiles/file/nunugoxalorav.pdfIn PDF document text
    • http://beiwendq.com/data/attachment/file/neboki.pdfIn PDF document text
    • http://yoyaku.com/app/webroot/js/kcfinder/upload/files/73105169631.pdfIn PDF document text
    • http://thermcom.cz/userfiles/file/sukezewuribadazukifo.pdfIn PDF document text
    • http://mottohub.com/multimedia/userfiles/file/39955497494.pdfIn PDF document text
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1620d8d924e878---61833149129.pdfIn PDF document text
    • http://www.mousumibanerjee.com/fckimages/file/59311092335.pdfIn PDF document text
    • http://liveisagenix.com/ckfinder/userfiles/files/51461135182.pdfIn PDF document text
    • https://pointvirgule.ca/upload/editor/file/jikuxolalakilimesitosi.pdfIn PDF document text
    • http://www.organizacaoatos.org/admin/ckeditor/kcfinder/upload/files/53819493970.pdfIn PDF document text
    • https://livewireeventz.com/userfiles/file/2716612377.pdfIn PDF document text
    • http://j-line.ca/fck_upload/file/burok.pdfIn PDF document text
    • https://osikovo.eu/webroot/img/content/files/98902213432.pdfIn PDF document text
    • http://alanurturizm.com/rsm/files/povozotugewu.pdfIn PDF document text
    • http://zenpersonnel.com/UserFiles/file/savudokofokopitibopogabed.pdfIn PDF document text
    • https://worldmedglobal.com/userfiles/files/jixenajofozof.pdfIn PDF document text
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/162251a07ef6ee---vixezujekenozexoworawavo.pdfIn PDF document text
    • http://veraschwemmle.de/fckdata/file/sawesafajixodeve.pdfIn PDF document text
    • http://185.33.116.142/~bbyacht01/upload/files/27856902050.pdfPDF link annotation
    • http://datong-travel.tw/upload/ckeditor/files/20220225221219.pdfIn PDF document text
    • http://navigator-nsk.ru/userfiles/file/faluw.pdfIn PDF document text
    • http://clickvay.com/upload/files/sumogojenaremixit.pdfIn PDF document text
    • http://giadinhlaurenso.org/upload/files/10390318950.pdfIn PDF document text
    • http://smalternatywa.pl/media/upload/files/20409389087b3233b6159f81e8108eda.pdfIn PDF document text
    • http://www.anpecv.es/gestor/ckeditor/kcfinder/images/files/65874293229.pdfIn PDF document text
    • http://kme-kme.cz/files/file/17066230604.pdfIn PDF document text
    • https://linhancomvn.xelinhan.vn/userfiles/file/levonuvov.pdfIn PDF document text
    • http://sklepjola.pl/userfiles/file/72154554443.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/97e7b83924d651a357079297ea318743/remij.pdfIn PDF document text
    • http://fantalife.nl/userfiles/file/25229213079.pdfIn PDF document text
    • https://capitalsyndic.com/userfiles/file/93622777016.pdfIn PDF document text
    • https://sd.martabemitrasosial.com/editor/files/sinipimikafekoda.pdfIn PDF document text
    • https://najlepsze-w-polsce.pl/uploads/71038109044.pdfIn PDF document text
    • http://tsetv.kz/app/webroot/js/kcfinder/upload/files/5218772235.pdfIn PDF document text
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/vhr3op323hbtab4jt1ttqq9be1/37970337625.pdfIn PDF document text
    • https://knurussian.kr/DATA/upload/files/202202091330226666.pdfIn PDF document text
    • https://tortugafilms.com/adminfiles/file/vodoridodekemaguverova.pdfIn PDF document text
    • https://obo.olsztynek.pl/assets/includes/kcfinder/upload/files/88533651591.pdfIn PDF document text
    • https://ienter.bg/files/68048336164.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
    +6 more URL(s)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00070be8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70BE8 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00072308.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72308 21908 bytes
SHA-256: d65d27cd919fa387b82783ba6609c6d2348182a70a2d5243d6990dfb5f29a547
font_02_sfnt_off00075bcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75BCF 10472 bytes
SHA-256: b257d72e5491e76ce4e5915da8dc2ca11ceff2a0a841873d380a266d1f827d98