Malicious PDF — malware analysis report

Static analysis result for SHA-256 f99042bdff9c6894…

MALICIOUS

PDF

74.9 KB Created: 2022-04-15 19:56:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-13
MD5: 95d0dbe95a867f53d927a524a274a06a SHA-1: d6cb2e95cbe07450898dd4b88775abf199476234 SHA-256: f99042bdff9c68941fb3ada23a0200fae38ca3ed48965ffe6a78234c9fcfed1c
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 7

  • 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.
  • 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://norin.co.za/YmrXLWy8?keyword=etica%20para%20amador%20capitulo%204%20y%205%20resumen PDF link annotation
    • https://ronabamipiboti.weebly.com/uploads/1/3/4/5/134598089/nudekodigel-tutatezixe-josakodavudur.pdfIn PDF document text
    • https://lewovabarififu.weebly.com/uploads/1/3/1/4/131453312/wipitotarubur_jofedise_viwapirerin_begufoxabad.pdfIn PDF document text
    • http://databaze.glaukom.cz/upload/files/mokariwelaranolalarugev.pdfIn PDF document text
    • https://bunixidulot.weebly.com/uploads/1/3/5/9/135964284/ca2a5178716b2.pdfIn PDF document text
    • https://paxupodef.weebly.com/uploads/1/3/4/7/134763896/12d3303774df08.pdfIn PDF document text
    • https://regifevadep.weebly.com/uploads/1/3/4/4/134476302/tiligabojidibukesog.pdfIn PDF document text
    • https://mevesazikixewo.weebly.com/uploads/1/3/4/3/134366921/tovutesiz.pdfIn PDF document text
    • https://xijofufakeziti.weebly.com/uploads/1/3/1/3/131380729/jegisozovum.pdfIn PDF document text
    • http://hoogbegaafdennu.nl/userfiles/file/wanisesedokovo.pdfIn PDF document text
    • http://isitekmuhendislik.com/userfiles/file/rabawobenaliwomanogo.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16232f99556595---67596369793.pdfIn PDF document text
    • https://tuvekowemenizog.weebly.com/uploads/1/3/4/3/134350361/8322505.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/162132935ef214---mikifure.pdfIn PDF document text
    • https://www.sterlingsez.com/ckfinder/userfiles/files/40655192024.pdfIn PDF document text
    • http://ellipsisnovel.com/file_space/files/70605698940.pdfIn PDF document text
    • https://dolaodong.baohohoanglong.com/userfiles/file/tebofuwuwo.pdfIn PDF document text
    • http://supermarketdv.ru/files/file/wufoxonojejidifatakiju.pdfIn PDF document text
    • https://0924055971.com/uploads/files/202202170344127833.pdfIn PDF document text
    • https://ponexetiziw.weebly.com/uploads/1/4/1/3/141324118/5862a1a77fa.pdfIn PDF document text
    • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/f64f8bfae66187f816dfdbc79f858705/tatowegokunufusesexap.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_off0000bc33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC33 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d44a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD44A 11084 bytes
SHA-256: 765155205f516bc0d18316d797cb72b662fa7c8d42e150cc22a6b09ebedd500f
font_02_sfnt_off0000ee3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE3A 18432 bytes
SHA-256: 01a22f87b6b15f9758afad9613ecd6b2590134167b75bd482c1d6ceb246f76fa