Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbd5d1fb2d957130…

MALICIOUS

PDF

71.1 KB Created: 2021-09-20 13:06:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 5f8fe543449be2c277bc11c0767b9a50 SHA-1: 671764d598c3f9db6904a9b2a12ba06d6e4b7375 SHA-256: dbd5d1fb2d9571309fbd69eb9233cdc3a27f49e84d930f94ece6f75ca4334473
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which are associated with link farms and disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were directly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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 https://pistant.ru/uplcv?utm_term=winning+eleven+2002+android+download PDF link annotation
    • https://mondoaudio.it/img/uploaded/file/luxotipafabopofe.pdfIn PDF document text
    • http://k3projekt.pl/uploads/userfiles/files/gewuwo.pdfIn PDF document text
    • https://www.pirkitpadangas.lt/ckfinder/userfiles/files/88234534250.pdfIn PDF document text
    • http://daiichihousing.net/uploads/news_file/87682610887.pdfIn PDF document text
    • http://cyuanmei.com/userfiles/file/tuliboxugonigokumozi.pdfIn PDF document text
    • https://finliz.lt/i/File/25674630309.pdfIn PDF document text
    • http://mobil-tech.com/files/bepetuturuzoja.pdfIn PDF document text
    • http://problemconsulting.com/img/download/files/tojogazitez.pdfIn PDF document text
    • https://trsoftyazilim.com/genelresimler/file/tabedowuke.pdfIn PDF document text
    • http://old.bgk-meshkova.com/ckeditor/ckfinder/userfiles/files/71525356387.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613d4402d3738---xibixagadunimavega.pdfIn PDF document text
    • http://goodtraefarm.com/ckupload/files/berisuwipifukaremeziluj.pdfIn PDF document text
    • http://naturenhuman.com/app/webroot/userfiles/file/fetetuvigobikobaleme.pdfIn PDF document text
    • http://osoboebludo.com/ckfinder/userfiles/files/rutenazekarojugerejuj.pdfIn PDF document text
    • http://rassadaspb.com/new/files/file/gesulikamoxemij.pdfIn PDF document text
    • https://weeb.nu/userfiles/file/12646270352.pdfIn PDF document text
    • https://aksukartela.com/images_upload/files/61588240286.pdfIn PDF document text
    • http://picart-personal.pl/fckupload/upload/file/63845088656.pdfIn PDF document text
    • https://www.pal-kont.hu/wp-content/plugins/super-forms/uploads/php/files/1ad263fed2ab14f52648615d12af07b8/31445012476.pdfIn PDF document text
    • http://tecs4.com/intranet/ckfinder/userfiles/files/97692691955.pdfIn PDF document text
    • http://career-id.org/ckfinder/userfiles/files/454823231.pdfIn PDF document text
    • https://jordanadams.com/ckfinder/userfiles/files/sowopanotekobo.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 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_off0000b4d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4D8 15796 bytes
SHA-256: 9584d019069999fd2d35bdc1189fedd6bf341e028fb76cbee5d66978f75acab4
font_01_sfnt_off0000dccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCCF 10544 bytes
SHA-256: 44b590adae88f8d8d638f88018bcf6fda097af3a3e8b70b5457c4d856f01ba83
font_02_sfnt_off0000f4cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4CC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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