Malicious PDF — malware analysis report

Static analysis result for SHA-256 18a122d6d38eb58c…

MALICIOUS

PDF

77.0 KB Created: 2022-04-16 06:42:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: 8b738504b46935bba900fa86784bf848 SHA-1: e5c2459f3740d52c7c29768a4c44e4944922c65d SHA-256: 18a122d6d38eb58c6cd9b8be68903e2a1a27df074f91fc7a8fbe0ad1743206b6
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://sunuf.co.za/YmrXLWy8?keyword=which%20is%20better%20ai%20or%20ml PDF link annotation
    • https://noruvejepemapab.weebly.com/uploads/1/3/4/7/134702548/nusilab-kojig-molomepopoz.pdfIn PDF document text
    • https://keuangan.artadev.com/assets/kcfinder/upload/files/kutefupug.pdfIn PDF document text
    • https://lepamatizetu.weebly.com/uploads/1/3/0/7/130739269/vodidimamotesokuv.pdfIn PDF document text
    • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/6f41383a963d9a28df50e6484499bf4f/bugeladukifideg.pdfIn PDF document text
    • http://pokrowce-ochronne.pl/Upload/file/pulukofuramogirop.pdfIn PDF document text
    • https://zuligenewem.weebly.com/uploads/1/3/4/7/134749141/sewaxadesokebip.pdfIn PDF document text
    • https://rovividupezudu.weebly.com/uploads/1/3/4/3/134373795/2289401.pdfIn PDF document text
    • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/162359e04c7cba---27348726223.pdfIn PDF document text
    • https://guwemegarorara.weebly.com/uploads/1/3/4/3/134353603/15ad0af8ea9b.pdfIn PDF document text
    • http://sdtech-kh.com/kcfinder/upload/files/zazoguzinagu.pdfIn PDF document text
    • https://taiwancy.com/app/webroot/userfiles/files/resanewaxejopimowisar.pdfIn PDF document text
    • https://telisawe.weebly.com/uploads/1/3/4/4/134466193/lojozuzujo-zepur-wuguwonudusop.pdfIn PDF document text
    • https://tafajasezo.weebly.com/uploads/1/3/4/3/134312542/regobepurokul-kakanapu-xemux-mikepozix.pdfIn PDF document text
    • http://sokol.knezmost.cz/soubory/xozujenumibabonuzanori.pdfIn PDF document text
    • https://stvietnam.net/luutru/files/49699584001.pdfIn PDF document text
    • https://jasiximipiz.weebly.com/uploads/1/3/1/4/131453573/29425543.pdfIn PDF document text
    • http://heathrowairporttaxi.website/userfiles/file/12662473597.pdfIn PDF document text
    • http://www.icf-plant.com/files/file/detikupivurawenu.pdfIn PDF document text
    • http://reguitti-engineering.it/userfiles/files/kiwiveruworusipadis.pdfIn PDF document text
    • http://www.webcourse.co.il/course/ckeditor/ckfinder/userfiles/files/rerekemizup.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_off0000c667.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c667.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c667.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC667 10524 bytes
SHA-256: e9ae2e34a2641df067113e61294ce9800b3d2bd183dbb108f17ffd34bff018a4
font_01_sfnt_off0000de67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE67 17480 bytes
SHA-256: 974d29d0790aad5322233819f88ad291831548957c9475208fb610a70dc9d7ae
font_02_sfnt_off00010c2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C2B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1