Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f1c9a5d351a1d1…

MALICIOUS

PDF

343.4 KB Created: 2022-03-03 13:48:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-02
MD5: 42eff38c3901a321d7b26374d5ca58b0 SHA-1: 5ad136d6348d99f88e04b7156ead1872e9a6bb66 SHA-256: a4f1c9a5d351a1d158c8a05d9ac09e10c6845659902c21f3613760d0051e18ae
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5353

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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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://tevav.co.za/XSRYdR1H?utm_term=rocket+league+cross+platform+switch+ps4 PDF link annotation
    • https://www.ssemusic.com/kcfinder/upload/files/49007869905.pdfIn PDF document text
    • http://alvit-bk.ru/userfiles/file/newudefavizitosozi.pdfIn PDF document text
    • http://karikatura-kovarik.cz/files/file/82853193052.pdfIn PDF document text
    • http://kangmeideyiliao.com/uploadfile/file///2022030123592348.pdfIn PDF document text
    • http://aven.su/kcfinder/upload/files/vovexibanetolapogowusozo.pdfIn PDF document text
    • http://lafenicealcamo.it/userfiles/files/fisenotumoxirugawebu.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1620768b4ad5d4---diforafel.pdfIn PDF document text
    • https://lacgl.org/upload/editor/file/sorevisaj.pdfIn PDF document text
    • https://gosselindesign.com/images/from_fckeditor/fichiers/lifuwupawimijovomolovak.pdfIn PDF document text
    • http://sallytour.com/FileData/ckfinder/files/20220212_9F897027CD36F7ED.pdfIn PDF document text
    • http://nacyc.jp/Upload/file/64689936451.pdfIn PDF document text
    • http://swhwsolution.it/ckeditor-ckfinder-integration/uploads/files/zutapafopataxegariw.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/162117487d26a9---60921729779.pdfIn PDF document text
    • https://petek.biz/resimler/files/tapowejudewexif.pdfIn PDF document text
    • http://columb-sklep.pl/userfiles/file/ronegopoferi.pdfIn PDF document text
    • http://tungalag.mn/userfiles/files/8803903908.pdfIn PDF document text
    • https://domilot.com/uploader/files/97608608357.pdfIn PDF document text
    • http://rw-hse-businessconsulting.de/userfiles/file/15859130790.pdfIn PDF document text
    • http://g-shocktou.com/user_file/file/tigobugizex.pdfIn PDF document text
    • http://groupementpecheduloir.com/ckfinder/userfiles/files/31920404556.pdfIn PDF document text
    • http://strap.sk/uploads/file/97638379191.pdfIn PDF document text
    • https://alcoolassistance-creuse.net/www/site/js/ckfinder/userfiles/files/78171602076.pdfIn PDF document text
    • https://wecareu.net/ckfinder/userfiles/files/bitorajebasovojimow.pdfIn PDF document text
    • https://pasifikendustriyel.com/userfiles/file/ferisafifitu.pdfIn PDF document text
    • http://panova-art.com/files/file/zejemurolupo.pdfIn PDF document text
    • http://szyoujin.com/UploadFile/file/20220219234954061.pdfIn PDF document text
    • http://cokhihoaiduc.com/uploads/files/14673570016.pdfIn PDF document text
    • https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f9ceb3a7be9---derejitovulolilolutifog.pdfIn PDF document text
    • http://cyc.cz/pictures/clanky/files/wovalavezabifat.pdfIn PDF document text
    • https://eskuvoiiranytu.hu/blog/file/7117217686.pdfIn PDF document text
    • http://terrigena.cz/data/pic/files/89733822181.pdfIn PDF document text
    • http://heonlab.hu/uploads/files/5315541037.pdfIn PDF document text
    • http://wowbond.com/upload/Fckeditor/file/86963740638.pdfIn PDF document text
    • https://designmaster.in/scgtest/eec-new/codelibrary/ckeditor/ckfinder/userfiles/files/xamanujuporoganumo.pdfIn PDF document text
    • http://reichspfarrer.sk/file/ditot.pdfIn PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/0342d90a511b5413a839d39f096179a2/betiwolitewalorovometa.pdfIn PDF document text
    • https://www.icdsa21.scrs.in/kcfinder/upload/files/25929720251.pdfIn PDF document text
    • http://onishi-kyosendo.jp/archive/rovopizuxolerivubomokevo.pdfIn PDF document text
    • https://b2bircruise.travflex.com/bot/ckfinder/uf/files/mesujezuzagifud.pdfIn PDF document text
    • https://escolaalfa.com/userfiles/file/12476548388.pdfIn PDF document text
    • http://makrostal.pl/user_images/file/vewogikulesaba.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/1621c29545b5ec---88175258424.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1620c4c9f8eed2---nosodakogadiferipap.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
    +2 more URL(s)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004ea8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EA8C 11224 bytes
SHA-256: 5f08afbac04ac85951bf1fdc78ba62302fc444466ffbb6f4a364752181e775c8
font_01_sfnt_off00050506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50506 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00051c23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51C23 18752 bytes
SHA-256: 25bb51bb7251fed14b1468f516719e116d58ddb0f271f588e8e0ca2cda4e3835