Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b6c3d3a1b025eb…

MALICIOUS

PDF

79.6 KB Created: 2022-04-18 23:31:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-02
MD5: 167ba40c8caa8be60f56654b08d93765 SHA-1: 4e5f0448aaa3cf1769e9492e955552cf19ec6075 SHA-256: 88b6c3d3a1b025ebda4fc65d7154fbaf9f5d9d4d8457ad7ff2e75c33defa6a70
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://zepaxanodufinek.weebly.com/uploads/1/3/4/4/134455649/3758bb5b3f4.pdf In PDF document text
    • https://rimedugomo.weebly.com/uploads/1/3/0/7/130740195/1a3ec2cf.pdfIn PDF document text
    • http://dambi.pl/userfiles/file/84058867973.pdfIn PDF document text
    • https://zeruposizagaki.weebly.com/uploads/1/3/4/8/134854722/4668474.pdfIn PDF document text
    • https://dufevirefat.weebly.com/uploads/1/3/1/4/131438490/5090785.pdfIn PDF document text
    • http://pusat.wellcomm.co.id/assets/kcfinder/upload/files/52505894769.pdfIn PDF document text
    • https://www.scmribadeave.pt/sgc/Assets/Plugins/CKEditor/kcfinder/Uploads/files/sizevakajaxasogodaruniseg.pdfIn PDF document text
    • http://www.kotolantopeni.cz/files/letegiredib.pdfIn PDF document text
    • https://aletihad-group.com/userfiles/files/35083471265.pdfIn PDF document text
    • https://volenasidopawo.weebly.com/uploads/1/3/4/2/134265528/370500.pdfIn PDF document text
    • https://kafijojiwagovi.weebly.com/uploads/1/3/5/3/135387916/kavilitamari-savovuj-jutudoliga.pdfIn PDF document text
    • https://kezarixanutoge.weebly.com/uploads/1/3/4/3/134372428/4564809.pdfIn PDF document text
    • https://pinoxelu.weebly.com/uploads/1/3/4/1/134108818/gasibudefisenomo.pdfIn PDF document text
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/4eeb457f6a0f8759733a6ccf77ad2051/tumomukaziwajizudimag.pdfIn PDF document text
    • https://gufavugowiguxu.weebly.com/uploads/1/3/4/5/134590320/bugizel.pdfIn PDF document text
    • https://xemupawiked.weebly.com/uploads/1/3/4/3/134321325/foxofizajefekonifoz.pdfIn PDF document text
    • https://sayurmateng.com/contents/files/63930978261.pdfIn PDF document text
    • http://bizzarro.be/admin/kcfinder/upload/files/dijofererubefesa.pdfIn PDF document text
    • https://sovuzozasofebod.weebly.com/uploads/1/3/4/3/134343281/bamur.pdfIn PDF document text
    • https://ribosotegolexo.weebly.com/uploads/1/3/4/0/134013239/puwoxelu-tukalowub-nimitofadozojat-podubaz.pdfIn PDF document text
    • https://loxajutuwaguxi.weebly.com/uploads/1/3/2/6/132681393/14d4f08.pdfIn PDF document text
    • https://jijalasigode.weebly.com/uploads/1/3/4/3/134344414/nulijevamiromediwuk.pdfIn PDF document text
    • http://legrand-valena.su/kcfinder/upload/files/29554177350.pdfIn PDF document text
    • https://gomafaned.weebly.com/uploads/1/3/5/2/135296522/c6682f2816a.pdfIn PDF document text
    • http://innersolutions-uk.com/file/mipavuladububivisobolu.pdfIn PDF document text
    • https://podar.co.za/YmrXLWy8?keyword=who%20moved%20my%20cheese%20spencer%20johnson%20freePDF link annotation
    • 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_off0000cfcd.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000cfcd.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFCD 10788 bytes
SHA-256: 44c83cf68f03d39a96b2777230de166d2eb7d38c996a254ed3bfd8910fb89625
font_01_sfnt_off0000e877.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE877 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010089.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10089 17588 bytes
SHA-256: 4eba318660183ee240167645a21a7bb403a658da75181cbdfb12d4e31c06258d