Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2ab71d7d20b1ed…

MALICIOUS

PDF

82.5 KB Created: 2022-04-05 01:37:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: ecb0a85f62e4b3d845c068e0ee521a99 SHA-1: 97ecf290117f9b8397b7731688c6d62734cebe28 SHA-256: af2ab71d7d20b1ed4ecb03e7b00e815cb770627b525f69342900f2a9e42ecc96
156 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
  • 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://sunuf.co.za/YmrXLWy8?keyword=the%20mysticism%20of%20the%20cloud%20of%20unknowing%20pdf PDF link annotation
    • https://tanvietnamdinh.com/uploads/files/tenirekilos.pdfIn PDF document text
    • https://gopherscopes.com/userfiles/file/tekolefanibev.pdfIn PDF document text
    • http://ttech.com.vn/ckeditor/kcfinder/upload/files/51378364397.pdfIn PDF document text
    • https://www.varoslod.hu/kcfinder/upload/files/48496719616.pdfIn PDF document text
    • http://vtdsbinhthuan.vn/public/uploads/userfiles/file/47478673703.pdfIn PDF document text
    • https://kokujilu.weebly.com/uploads/1/3/1/4/131453241/4272920.pdfIn PDF document text
    • https://ochronaskory.pl/pliki_user/File/74980057426.pdfIn PDF document text
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/16225cca98848a---rirumufuninumekobov.pdfIn PDF document text
    • https://alsultantrading.ae/userfiles/files/49798573761.pdfIn PDF document text
    • https://ajur.rest/uploads/userfiles/file/zibeponotujojiv.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/2ae58c10ff5787d64933ae79789db859/tubipobo.pdfIn PDF document text
    • http://thetestmag.com/userfiles/files/golezem.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16248b688df48e---surefuruxamoxewimiwo.pdfIn PDF document text
    • http://gwardiajuvenia.pl/zdjecia/fck/file/99945810077.pdfIn PDF document text
    • https://hokusui.co.jp/hsk/wp-content/plugins/ckeditor-for-wordpress/kcfinder/upload/files/24176430943.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621a2b1b0e557---85968047837.pdfIn PDF document text
    • https://jopokiwajisi.weebly.com/uploads/1/3/4/1/134108554/c9a6e1d75f.pdfIn PDF document text
    • http://lnaixi.com/userfiles/file/20220317001432_2020314325.pdfIn PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/acae1d44574e34341cf6ad457a3efd4e/25141817811.pdfIn PDF document text
    • http://borsasetelsis.cat/admin/kcfinder/upload/files/71972024907.pdfIn PDF document text
    • http://meuble-tunisie.com/userfiles/file/89988668928.pdfIn PDF document text
    • https://zunutupere.weebly.com/uploads/1/3/1/4/131453944/tepivuduwopidu.pdfIn PDF document text
    • http://www.icareonline.net.au/ckfinder/icare/files/tuwakosibos.pdfIn PDF document text
    • http://siciny.eu/userfiles/file/wogamizojedibirirapukod.pdfIn PDF document text
    • https://e-ssuances.com/ckfinder/userfiles/files/kunewibov.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_off0000dc9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC9A 16956 bytes
SHA-256: b4846b64f848b50d0b297452143898693344d62e7a45632e1cd2acf8ceef6d3c
font_01_sfnt_off000108be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108BE 11160 bytes
SHA-256: 100cffcaa84ca4b8bc2f6618b41b6b1a66c8dfea96674f25c33f533f2de97466
font_02_sfnt_off00012288.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12288 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1