Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6ea81641f55e45a…

MALICIOUS

PDF

72.1 KB Created: 2022-03-31 02:02:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-17
MD5: 43a0921268d56ef268a70354c0255577 SHA-1: 62ad277e2527eae83493537263f3e483015d43b3 SHA-256: b6ea81641f55e45a4deefca216dfea9594307269666b46e1f3c9c30fda6e2ccf
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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://yubit.co.za/YmrXLWy8?keyword=hansel%20and%20gretel%20cast%201987 PDF link annotation
    • https://posilopawirina.weebly.com/uploads/1/3/4/3/134353572/gojatorigofur.pdfIn PDF document text
    • https://www.drukwerkmax.nl/public/admin/assets/global/plugins/kcfinder/upload/files/wegifanojenafobobed.pdfIn PDF document text
    • https://aordonez.com/images/contenidos/files/fegufirosi.pdfIn PDF document text
    • https://ladymamashop.com/uploads/files/202203020658154349.pdfIn PDF document text
    • http://gartenstadt-apotheke.com/userfiles/file/lomebofon.pdfIn PDF document text
    • http://mingzhicc.com/userfiles/files/tebijamasapozavenale.pdfIn PDF document text
    • http://belean.pl/userfiles/file/siboga.pdfIn PDF document text
    • https://seerupit.dk/assens/file/povamagabevogawigirote.pdfIn PDF document text
    • https://mondoaudio.it/img/uploaded/file/tinutelideputegelonineze.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16243781f83505---mexopuvapaposaziketevobe.pdfIn PDF document text
    • https://www.parquesanalbertohurtado.cl/ckfinder/userfiles/files/31958082104.pdfIn PDF document text
    • http://www.tempshift.com/app/webroot/files/uploadimagesfile/3654533567.pdfIn PDF document text
    • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/eb8fe43b80004504a09e1a841283981a/nixovurixafisezaxaboxu.pdfIn PDF document text
    • https://dentrangtrisaigon.net/images/uploads/files/bamul.pdfIn PDF document text
    • http://greenlasthousing.com/admin/kcfinder/upload/files/latidagobujasuti.pdfIn PDF document text
    • https://rogelevosegadu.weebly.com/uploads/1/3/4/6/134651245/mibulaforizowof-sezizije-wowutowuz.pdfIn PDF document text
    • http://japhina.com/upload/file/57371900033.pdfIn PDF document text
    • https://4dapi.glg228.info/app/webroot/uploads/files/bifij.pdfIn PDF document text
    • https://www.nasasquirrel.org/kcfinder/upload/files/75008848112.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/162355946e2378---fasisoburixijijubaza.pdfIn PDF document text
    • https://xuxefaposil.weebly.com/uploads/1/3/4/3/134393683/jegaxefavutagosilute.pdfIn PDF document text
    • https://vizokajobekaxa.weebly.com/uploads/1/3/0/9/130969885/152acc046e633.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_off0000b596.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000b596.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB596 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off0000cc35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC35 17412 bytes
SHA-256: 68b837926ad04af83545d6cb430f3cb2b9c2984c34cc5c2b342c80d0c24531e7
font_02_sfnt_off0000faa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAA2 10800 bytes
SHA-256: a20406f682c90d158cd201509abab03cb27b22c9d5c8461aaee2cd28c71b99c5