Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9cf4c22d217612d…

MALICIOUS

PDF

79.3 KB Created: 2022-04-27 03:36:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-25
MD5: e4cc085177e9d9b3edf8a361105a044e SHA-1: 1a79510ed22f752ce3f30c68aa731d60105d224c SHA-256: a9cf4c22d217612df16e2419c039a7c0dbd4029d169b6b43b3f6b088c6462e16
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://cafij.co.za/YmrXLWy8?keyword=tipo%20de%20comunicaci%C3%B3n%20celular%20que%20promueve%20el%20uso%20de%20anticonceptivos%20orales PDF link annotation
    • https://olivermilk.vn/tctt/sites/aaa/file/nezewatujo.pdfIn PDF document text
    • https://kimodoximotoden.weebly.com/uploads/1/3/1/8/131856266/kidulud.pdfIn PDF document text
    • https://acv-verdun.fr/kcfinder/upload/files/38667819759.pdfIn PDF document text
    • https://kugibiredatejag.weebly.com/uploads/1/3/4/3/134319346/184ba1c70372c.pdfIn PDF document text
    • http://basketaci.cz/UserFiles/File/wewonixigusero.pdfIn PDF document text
    • https://rovibabewovel.weebly.com/uploads/1/3/4/8/134884015/a2faefb7c.pdfIn PDF document text
    • http://blossomtour.net/FileData/ckfinder/files/20220424_86B9F6D24FEBB328.pdfIn PDF document text
    • https://citrasas.com/ckfinder/userfiles/files/voluwu.pdfIn PDF document text
    • https://zozumufixava.weebly.com/uploads/1/3/0/9/130969508/jopigomuzizome.pdfIn PDF document text
    • http://spasinnia.org/assets/ckeditor/kcfinder/upload/files/55110834255.pdfIn PDF document text
    • https://nolugebufumo.weebly.com/uploads/1/3/4/5/134597996/figipexogorij.pdfIn PDF document text
    • https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1621ac02551b11---vadaxevegipulobuwatajuwo.pdfIn PDF document text
    • https://xosizinunebazen.weebly.com/uploads/1/3/4/0/134017923/38f845c88.pdfIn PDF document text
    • https://sportcity.bg/webroot/img/content/files/wudaresowuxope.pdfIn PDF document text
    • https://pinonomobeberex.weebly.com/uploads/1/3/4/3/134318871/1f9972d93723.pdfIn PDF document text
    • https://travelinnsuites.com/nbloom/fckuploads/file/41063583426.pdfIn PDF document text
    • http://pharmabiosolutions.com/filespath/files/20220406102434.pdfIn PDF document text
    • https://danulezide.weebly.com/uploads/1/3/4/6/134601395/javaxopul_bomadefemej.pdfIn PDF document text
    • https://vudewozojaw.weebly.com/uploads/1/3/6/0/136053158/0c23984648ea9.pdfIn PDF document text
    • https://mudobimug.weebly.com/uploads/1/3/4/8/134853100/dd33d636660.pdfIn PDF document text
    • https://tedojumutu.weebly.com/uploads/1/3/4/0/134042579/fupusavexovu-zoxomewovaren-nexefugopo.pdfIn PDF document text
    • https://ia-community.com/upload/files/70176781741.pdfIn PDF document text
    • http://szwygs.com/upload/nogafudobaf.pdfIn PDF document text
    • https://asi-filter.pl/files/file/55923858685.pdfIn PDF document text
    • https://nikokitigo.weebly.com/uploads/1/3/4/5/134500207/8f87d3426.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_off0000ccc5.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000ccc5.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ccc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCC5 11088 bytes
SHA-256: 7a830ed44f5448dc378879706f55b602660a872aa587fe18799b59d59cce1532
font_01_sfnt_off0000e62c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE62C 17336 bytes
SHA-256: ece10a9a7ba9e7e5486f952182e56c9f423a6c122fb425fe73abb1c4c099a064
font_02_sfnt_off0001124a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1124A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1