Malicious PDF — malware analysis report

Static analysis result for SHA-256 18a527bffc3b3021…

MALICIOUS

PDF

84.7 KB Created: 2022-03-31 17:48:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: 2a5bdb078bbc8caba6b758649f63a843 SHA-1: 17ffeff76761748fa64a5bcb65be15d0ecde237a SHA-256: 18a527bffc3b3021c9f5911f2b560f82986b841d7379bc27b67767beedd75efd
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://lazav.co.za/YmrXLWy8?keyword=feng%20shui%20annual%20flying%20stars%202019 PDF link annotation
    • http://simonova-zahrada.cz/ckeditor/kcfinder/upload/files/veguvujofonimu.pdfIn PDF document text
    • http://wadsoda.com/UserFiles/File/6570758927.pdfIn PDF document text
    • https://suma.ca/upload/editor/file/89571218463.pdfIn PDF document text
    • http://www.imcet.org.tr/kcfinder/upload/files/buperajadixoluzenevilaz.pdfIn PDF document text
    • https://litizabege.weebly.com/uploads/1/3/4/7/134713043/686a0f1c87693.pdfIn PDF document text
    • http://terrigena.cz/data/pic/files/deponovexekobezanunel.pdfIn PDF document text
    • https://sokimazivad.weebly.com/uploads/1/3/4/6/134620474/5516482.pdfIn PDF document text
    • https://binazinir.weebly.com/uploads/1/3/4/1/134108718/0be5201687c51b.pdfIn PDF document text
    • https://mm-podium.ro/userfiles/file/pimusonepuvi.pdfIn PDF document text
    • https://saximomedu.weebly.com/uploads/1/3/2/7/132740398/3962682.pdfIn PDF document text
    • https://srldirect.com/ckfinder/userfiles/files/maneluz.pdfIn PDF document text
    • https://rubenferro.com/userfiles/file/telukaw.pdfIn PDF document text
    • https://winpoasia.com/ckfinder/userfiles/files/kewelutuwujarusedawogi.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1623e57f51b5ec---potelipelitiwatew.pdfIn PDF document text
    • http://ideamarketing.abkgrupa.pl/pub/file/mibesimebarivamefuxitaf.pdfIn PDF document text
    • https://xedafiwiwez.weebly.com/uploads/1/3/2/3/132302754/7516151.pdfIn PDF document text
    • http://smartbazar.online/app/webroot/upload/files/molejesofovosa.pdfIn PDF document text
    • https://fofavaduk.weebly.com/uploads/1/3/4/4/134436242/nivesatadu.pdfIn PDF document text
    • https://serviciosmediplan.club/images/userfiles/file/tanudowumuzamuguwep.pdfIn PDF document text
    • https://pejilajapife.weebly.com/uploads/1/3/4/4/134477767/wozibolopefi.pdfIn PDF document text
    • https://forbesbrandys.cz/upload/files/52770592587.pdfIn PDF document text
    • http://universityjournals.org/app/webroot/js/kcfinder/upload/files/88735299416.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_off0000d262.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000d262.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD262 16580 bytes
SHA-256: 275eac323467b64c5163bfd275dac00b6110139d60ed450666377cc8f2289da2
font_01_sfnt_off0000fd4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD4F 11028 bytes
SHA-256: b73cf1321c15fb2b3e0494f80a896c80cfa637c7d689440aaf19bc1818f49d14
font_02_sfnt_off00011707.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11707 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00012f14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F14 5848 bytes
SHA-256: fcf3f7a92bc6e292c815f3512eee8548e680154bbd0fa58d4dd3390da6a5c099