Malicious PDF — malware analysis report

Static analysis result for SHA-256 018a163ef9efcd2d…

MALICIOUS

PDF

70.7 KB Created: 2022-04-08 15:40:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-08
MD5: 263b5a9a3199f768e4318f1147694c73 SHA-1: 28d6ff550fc622b56f2370f7b8556e4dbc80e991 SHA-256: 018a163ef9efcd2dea463fd07cc1c5ab3f250aa328d21a1739ced846389fa30c
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://yoyep.co.za/YmrXLWy8?keyword=chuunibyou%20demo%20koi%20ga%20shitai%201.%C3%A9vad%2013.r%C3%A9sz PDF link annotation
    • https://mttrasportisrl.it/dati/upload/file/89777646630.pdfIn PDF document text
    • http://www.tamar.org.br/fotos_news/files/fugojaki.pdfIn PDF document text
    • http://xn--80aer5aza.xn----htbdepbihnfb8cyg.xn--p1ai/ckfinder/userfiles/files/91475975645.pdfIn PDF document text
    • http://prinsart.ro/uploads/files/xaxabulukoxezoxuwixude.pdfIn PDF document text
    • https://cpsguffanti.com/uploads/file/74364980151.pdfIn PDF document text
    • https://suvedezu.weebly.com/uploads/1/3/1/3/131379937/magisomuzipese_dexuguwokapiza_xijujuw_boxakagegizamon.pdfIn PDF document text
    • https://laxabuzataz.weebly.com/uploads/1/3/4/3/134385801/897839be59c6.pdfIn PDF document text
    • https://clubelsendero.com/img_pag/file/48200203577.pdfIn PDF document text
    • https://suzagadagaxu.weebly.com/uploads/1/3/0/7/130775939/risewexesuzigizivuz.pdfIn PDF document text
    • https://waxavunetisuj.weebly.com/uploads/1/3/4/6/134641171/7d787ad9a.pdfIn PDF document text
    • https://webmedcentralplus.com/userfiles/file/27038915664.pdfIn PDF document text
    • https://pafirovax.weebly.com/uploads/1/3/4/6/134662293/6414394.pdfIn PDF document text
    • https://www.apsar.es/assets_back_office/js/plugins/kcfinder/upload/files/wabep.pdfIn PDF document text
    • https://affze.com/userfiles/file/xodokulewozile.pdfIn PDF document text
    • http://drewix.kkozle.pl/portal/panel/userfiles/file/48901895238.pdfIn PDF document text
    • https://ruritetij.weebly.com/uploads/1/3/4/7/134704214/jixaduv-vetisikibava-zalidu-nudavetaxumilol.pdfIn PDF document text
    • https://saxijafuduzota.weebly.com/uploads/1/3/4/6/134692269/804799.pdfIn PDF document text
    • https://mirepabokotixiz.weebly.com/uploads/1/3/2/7/132712407/c3e7e5a50b57b.pdfIn PDF document text
    • https://bovemadewu.weebly.com/uploads/1/3/4/6/134651231/7481806.pdfIn PDF document text
    • http://19nolumahmudiyeasm.com/depo/files/vudozipeparezorigasoz.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_off0000a9c0.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000a9c0.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a9c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9C0 11696 bytes
SHA-256: 6a8af49895e753e6ad0e459032a9583617becb10fff5ad01dde5da025ab7dffd
font_01_sfnt_off0000c514.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC514 18184 bytes
SHA-256: 903f964868c170ee6a93230f28d7dc4ac69c3a0c3e01ab30b17d32ddc9d44db0
font_02_sfnt_off0000f213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF213 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1