Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea24b5b932f6f931…

MALICIOUS

PDF

70.1 KB Created: 2021-09-08 16:14:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: e0bdca0396f7c31a2365bd865f4c81c1 SHA-1: 81ad5feeb6ec3c96a3818f03bf214d423edd46ec SHA-256: ea24b5b932f6f931ee41d894e819ccbcb8294d209b9daaef0acfb726aee24fef
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to disposable domains, indicating a link farm designed to host malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests the document's purpose is to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 5

  • 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 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 http://malagi.pl/user-files/fck/file/gixevesovaxovagerop.pdf In PDF document text
    • https://1877painters.com/FCKeditor/file/14033083589.pdfIn PDF document text
    • http://reginahajo.hu/_user/file/poxoxusotafineb.pdfIn PDF document text
    • https://alummaswaja.com/yii/sdbalikpapan/home/images/upload/files/kazegedijigi.pdfIn PDF document text
    • http://www.goldenlantern.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/161326ceb3f8c7---sufurenopepilile.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/e0eb065282b1c1bec2a707cbfbe84ce8/zezezidi.pdfIn PDF document text
    • http://www.slappedtogether.com/editoruploadfiles/file/78329040272.pdfIn PDF document text
    • http://yuhenganquan.com/userfiles/file/20210908171353_1039240197.pdfIn PDF document text
    • http://malabarisproducoes.com/arquivos/files/56691919682.pdfIn PDF document text
    • http://vinczeandlaszlo.com/upload/48034327459.pdfIn PDF document text
    • http://hzbmsj.com/images/upload/File/34824546119.pdfIn PDF document text
    • https://producto.works/userfiles/file/wisis.pdfIn PDF document text
    • http://amidoux-peintures.com/ckfinder/userfiles/files/90342652620.pdfIn PDF document text
    • http://www.museopizarra.com/ckfinder/userfiles/files/xewulodefu.pdfIn PDF document text
    • https://inprovitparaguay.com/ckfinder/userfiles/files/46049107306.pdfIn PDF document text
    • http://yjbiotech.cn/upload/files/66385469280.pdfIn PDF document text
    • http://ifa-astrologie.de/userfiles/file/sawowaxuf.pdfIn PDF document text
    • https://grootformaatspandoeken.nl/userfiles/file/7119415811.pdfIn PDF document text
    • http://kemnhapkhau.com/upload/files/rutuzakugojaxogejajosigek.pdfIn PDF document text
    • http://megatex-plast.ru/pub/file/zepoxetilupoxodatis.pdfIn PDF document text
    • http://polymer-optix.de/userfiles/file/79595009392.pdfIn PDF document text
    • http://keletunderground.hu/images/uploaded_pics/file/zebejalefa.pdfIn PDF document text
    • http://kythuatviet.vn/uploads/userfiles/file/87777769302.pdfIn PDF document text
    • http://e2ingenieros.com/ckfinder/userfiles/files/motafororogujemogi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=rotator+cuff+strengthening+exercises+pdfPDF 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 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_off0000b4d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4D2 14452 bytes
SHA-256: 8fdcc06afd3d402be7a3cae5aca30ef096faae72773af3153387ce8ee9222910
font_01_sfnt_off0000d854.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD854 11100 bytes
SHA-256: 4ebfe92f99f98db6fbffd90f6f7df69a8bfde9f2687b14b6e8db60eaafaa63d8
font_02_sfnt_off0000f20b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF20B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.