Malicious PDF — malware analysis report

Static analysis result for SHA-256 b61ec7721228dfee…

MALICIOUS

PDF

332.5 KB Created: 2022-02-18 22:51:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-15
MD5: e342be2737b57a074e4d615dbbff0808 SHA-1: 4761580fce46f465001663c2cf29d01f02483a07 SHA-256: b61ec7721228dfee28580c90246a3e0b4e8f5f606e0584d761d686a40aedbd76
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7480

Heuristics 6

  • 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.
  • 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://wirut.co.za/XSRYdR1H?utm_term=billy+idol+discography PDF link annotation
    • https://kiemtoandongnghi.com/public/plugins/ckfinder/userfiles/files/wafusomosiludoja.pdfIn PDF document text
    • https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/7fe70807cda1d4188e794ad71dd34599/29616519298.pdfIn PDF document text
    • http://agro-norwa.pl/userfiles/file/47982081543.pdfIn PDF document text
    • http://frappsreagent.com/upload/files/vekikeferebagajuxap.pdfIn PDF document text
    • http://xn--80aafkatcapceshpicpg3h.xn--p1ai/pict/file/kofiguv.pdfIn PDF document text
    • https://mmagame.com/userfiles/file/gejatuxusuwab.pdfIn PDF document text
    • http://artediapharma.com/upload/files/55056910939.pdfIn PDF document text
    • http://tatishev.ru/admin/ckfinder/userfiles/files/xixore.pdfIn PDF document text
    • https://ij-ph.com/admin/SchoolFiles/files/11187825399.pdfIn PDF document text
    • https://kaowei.tw/image/files/20220124_020644.pdfIn PDF document text
    • http://www.rupankar.com/fckimages/file/winomifogulelojojiw.pdfIn PDF document text
    • http://retrievers.su/ckfinder/userfiles/files/wikowegux.pdfIn PDF document text
    • http://neza.cz/UserFiles/File/kakujagavapa.pdfIn PDF document text
    • http://cokhihoaiduc.com/uploads/files/6813527694.pdfIn PDF document text
    • http://fabriziocar.it/userfiles/files/puweperaribozab.pdfIn PDF document text
    • http://macabrey-luthier.fr/data/Files/gavevadidudilefez.pdfIn PDF document text
    • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/1620323050051d---93198933522.pdfIn PDF document text
    • http://www.bennex.co.th/assets/kcfinder/upload/files/29651368755.pdfIn PDF document text
    • http://szigetkozpalinka.hu/userfiles/file/subodoju.pdfIn PDF document text
    • http://ebslang.net/_UploadFile/Images/file/92371568497.pdfIn PDF document text
    • http://moscowfashion.net/content/xuploadimages/file/61952571303.pdfIn PDF document text
    • http://cnispgroup.com/filespath/files/20211126024159.pdfIn PDF document text
    • http://hamdannepal.com/userfiles/file/27385858511.pdfIn PDF document text
    • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161368bf733dd9---belexoxisiride.pdfIn PDF document text
    • http://xaydunghoangthanh.com/img_duhoc/files/44428964121.pdfIn PDF document text
    • http://keramann.ru/uploads/files/20933658741.pdfIn PDF document text
    • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/88656c7ac0c2597f5e87cf0e8f45a12e/43040557277.pdfIn PDF document text
    • https://mb-classic-service.de/userfiles/file/sisosujizava.pdfIn PDF document text
    • http://rjt1.org/upload/files/64454783385.pdfIn PDF document text
    • https://www.miroku-mfg.co.jp/system/js/kcfinder/upload/files/47786348989.pdfIn PDF document text
    • http://grupopiscis.com/upload/files/20285296209.pdfIn PDF document text
    • https://coffeetuanvang.com/Images_upload/files/81597231280.pdfIn PDF document text
    • http://hnsunnyfood.com/d/files/vetetotipudefazevenaxu.pdfIn PDF document text
    • http://epoptavky.com/is/images/FCKeditor/File/2202253423.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_off0004c34a.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004c34a.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004c34a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C34A 10624 bytes
SHA-256: f923a966390f130f764d7542ab0e3418ddf23bac41dc11b3569bdeb3678bdf04
font_01_sfnt_off0004db80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DB80 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0004f29b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F29B 18360 bytes
SHA-256: 71ab128c9be9ddc993d9bfadb51e4a7191c793465510af2d157733cbd71fc1b1