Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ad611b49806a9eb…

MALICIOUS

PDF

162.6 KB Created: 2021-12-03 00:52:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-20
MD5: 9ddcc06fe3adafec0c995c3fc56a4016 SHA-1: c15c7124e558f2224e7243b1c78a09e2c1e8fa15 SHA-256: 9ad611b49806a9eb27647110658efcda2108d258215f319bdcdffd6260f2e878
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9550

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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://chung-pei.com/userfiles/file/kewimivilelowazakosi.pdf In PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/1618cefe46380b---24116211069.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/16192095075bb4---61138778666.pdfIn PDF document text
    • http://coomargroup.com/ckfinder/userfiles/files/zazesifutosibasovozoka.pdfIn PDF document text
    • http://ceraunavoltapizzeria.it/userfiles/files/sulabokune.pdfIn PDF document text
    • http://akcihlar.cz/userfiles/file/vulinotetasawoxuzivot.pdfIn PDF document text
    • https://webmanagement.exing.ro/images/file/23952428715.pdfIn PDF document text
    • http://ain.proximeo.com/ckfinder/userfiles/files/18641828873.pdfIn PDF document text
    • https://eastmanllc.com/ckfinder/userfiles/files/janorobosexigaraba.pdfIn PDF document text
    • http://nct-vn.com/userfiles/file/57124566169.pdfIn PDF document text
    • http://customize.fr/fckeditor/editor/filemanager/connectors/php/img/Editor/file/lowilanumixopaweta.pdfIn PDF document text
    • http://petukmahaaaraj.com/userfiles/file/75992935200.pdfIn PDF document text
    • http://puginternational.com/ckfinder/userfiles/files/81369318690.pdfIn PDF document text
    • http://sushibelovo.ru/files/vajilejiriniwuguwijelawe.pdfIn PDF document text
    • http://stonepigments.com/userfiles/file/34566801257.pdfIn PDF document text
    • https://saigonservices.vn/images/uploads/files/lubikomosizuw.pdfIn PDF document text
    • http://evpltravel.com/xv_image/file/buzutadonulepeka.pdfIn PDF document text
    • http://darstin.com/userfiles/files/dojinadazizumusi.pdfIn PDF document text
    • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/1617f51cedc434---86459126116.pdfIn PDF document text
    • http://mmbc.cz/_data/user_files/file/kiriteromoletuseloresax.pdfIn PDF document text
    • https://landtop.com/filespath/files/20211129131953.pdfIn PDF document text
    • http://shmgec.com/Uploadfiles/files/sakerazefevazatigepiwixe.pdfIn PDF document text
    • https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16132f727a0b3b---xurafipivuz.pdfIn PDF document text
    • http://chiengthai.com/file_media/file_image/file/19633318187.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/2I9n2o-U8HI/uplcv?utm_term=los+libros+apocrifos+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_off00021c60.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00021c60.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00021c60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21C60 10376 bytes
SHA-256: ad4e0b6e4e415602c8a89f898ad428215c79428030a4e73cc4e27900a8fa5920
font_01_sfnt_off000233ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x233AB 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off00024a4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24A4A 19404 bytes
SHA-256: 6ccfbe84017920d874eaed9257fe3d8b9635f5d385e105e79bff1793f9a4c699