Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af67cbdbe3aca18…

MALICIOUS

PDF

70.2 KB Created: 2021-09-28 14:13:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 4cfd535ac6131d4725e7a1efff14ffa6 SHA-1: 59b28ce70b853ddf81b1886c9536365fecdbec6d SHA-256: 4af67cbdbe3aca18c20b9f68806bfb33dbb51b494e59e4f05bbf14183923ebd1
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9909

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 1 text block(s), carries a click-outward action, and is only 70 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://crewmak.ru/uplcv?utm_term=hacked+full+movie+watch+online+filmywap PDF link annotation
    • http://spc1991.com/ckfinder/userfiles/files/wuxajakexuwidaviwadaloteb.pdfIn PDF document text
    • http://chizclean.ru/files/fck/file/dazikozavawasukewawulave.pdfIn PDF document text
    • http://rfychina.com/upfiles/files/16320942042893.pdfIn PDF document text
    • http://npi-management.com/ressource/site-image/files/moxolonutesot.pdfIn PDF document text
    • https://clicksnepal.grnca.org/img/files/files/12625552443.pdfIn PDF document text
    • http://dalhousieretreat.com/cote_dor_import/admin/ckfinder/userfiles/files/75632994616.pdfIn PDF document text
    • https://impulsa.mantareys.net/uploads/plantillas/files/48740725498.pdfIn PDF document text
    • http://dogomanhnghia.com/uploads/files/70080777691.pdfIn PDF document text
    • http://vaynhe.com/upload/files/28713504558.pdfIn PDF document text
    • http://miraesusan.com/ckupload/files/633833863.pdfIn PDF document text
    • https://eminencesolutions.in/resources/userfiles/file/7385766260.pdfIn PDF document text
    • http://alocainghien.com/uploads/userfiles/file/kunafidunejane.pdfIn PDF document text
    • http://tpt.taipei/asset/uploads/files/68054306740.pdfIn PDF document text
    • http://nm-union.ru/ckfinder/userfiles/files/javomalujiwovanirinoda.pdfIn PDF document text
    • http://szermgrt.hu/uploads/ckfinder/userfiles/files/jatuxat.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/vniog19evbc6qtme8l37b2f4q4/bibalalaxazifaxu.pdfIn PDF document text
    • https://spcinternational.in/ckfinder/userfiles/files/baxubukepemilu.pdfIn PDF document text
    • http://ventima.ru/userfiles/file/3352991230.pdfIn PDF document text
    • https://hattoco.vn/images/ckeditor/files/geguxa.pdfIn PDF document text
    • http://mdsalon.ru/img/lib/file/68629831996.pdfIn PDF document text
    • http://pusancard.com/userData/board/file/norewigudi.pdfIn PDF document text
    • https://cr2tek.com/userfiles/Proj_Name/files/91866915607.pdfIn PDF document text
    • http://phupmirpol.pl/userfiles/file/disele.pdfIn PDF document text
    • https://mokshadhamnepal.org/userfiles/files/jivutoge.pdfIn PDF document text
    • http://hani-bee.com/userfiles/files/22514462947.pdfIn PDF document text
    • http://www.rajpuc.pl/pics/file/76902970942.pdfIn PDF document text
    • http://ztkammer.at/uploads/file/96017279456.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b247.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB247 11064 bytes
SHA-256: fa126a28bcbe812c50aef5d3c74be9ae3ff3d47b7fd54eedfd31ab7f8be5f86d
font_01_sfnt_off0000cbe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBE0 14704 bytes
SHA-256: 6664ec3d8d42d67b7d6d7faee3a63feae694964c600f687e8fffd678ebddb26f
font_02_sfnt_off0000f0ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0AC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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