Malicious PDF — malware analysis report

Static analysis result for SHA-256 655e9a29dfb75e96…

MALICIOUS

PDF

84.8 KB Created: 2021-09-16 01:06:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-04
MD5: 6f951ab61918d952d73e050f5ed48d8a SHA-1: 2ce5f632bcc6bdd590f19c98ef2b6dca24615c79 SHA-256: 655e9a29dfb75e962a6a04abced53f13965668a42ac85a0c8e4545e6764963a4
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. It contains numerous embedded URLs, with one heuristic identifying it as a link farm on disposable hosting. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to malicious content, potentially for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9905

Heuristics 5

  • 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 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://dh-cell.net/ckfinder/userfiles/files/6152531780.pdf In PDF document text
    • https://senfina.top/uploads/files/bupavonapevuguzofig.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1612edef7be5f4---disaropitamedalesabojo.pdfIn PDF document text
    • https://darshanam.com/ckfinder/userfiles/files/rosaloxilezazasugizokik.pdfIn PDF document text
    • http://worshipedia.mobi/sites/default/files/file/woleg.pdfIn PDF document text
    • http://www.slappedtogether.com/editoruploadfiles/file/xuxirifunisepixefuv.pdfIn PDF document text
    • https://by-express.com/upfiles/editor/files/16010025898.pdfIn PDF document text
    • http://salamatekhanevadeh.ir/ckeditor/files/files/vilukurotilizalekedisokud.pdfIn PDF document text
    • http://pivotal-technologies.com/userfiles/file/22954950053.pdfIn PDF document text
    • https://cooperadora.grupocreartel.com/documentos/archivos/25263063018.pdfIn PDF document text
    • http://toanlinh.vn/upload/files/dirubutabenagerur.pdfIn PDF document text
    • http://cantinachitarra.it/userfiles/file/42238875615.pdfIn PDF document text
    • http://smartdeal.pl/files/upload/files/jeginugopuwajazi.pdfIn PDF document text
    • https://astoraccessories.com/uploads/ckfinder/files/dijagarenedafado.pdfIn PDF document text
    • http://studioriboldi.eu/userfiles/files/23398921506.pdfIn PDF document text
    • https://maria-galland.ru/files/file/sibibujulumimobateso.pdfIn PDF document text
    • http://zuche0551.com/upload/file/82271224424.pdfIn PDF document text
    • https://jmtours.co/aym_image/files/27648376711.pdfIn PDF document text
    • https://ijtm.in/userfiles/file/32437599963.pdfIn PDF document text
    • http://arunimaflavours.com/userfiles/file/67850004478.pdfIn PDF document text
    • http://slabowidzacy.smprzemysl.pl/ckfinder/userfiles/files/ginevamen.pdfIn PDF document text
    • http://innotack.com/userfiles/files/xuzudulenuxibug.pdfIn PDF document text
    • http://lmtechsolution.com/userfiles/nanizezonolazir.pdfIn PDF document text
    • https://kuzeyilac.com/resimler/files/67483343847.pdfIn PDF document text
    • https://dakotaterritorydevelopment.com/ckfinder/userfiles/files/16110200234.pdfIn PDF document text
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135ca4c6a23e---96776518036.pdfIn PDF document text
    • http://pkynfe.net/userfiles/file/bukomaki.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=power+rangers+legacy+wars+mod+apk+download+latest+versionPDF 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_off0000dfc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC7 19296 bytes
SHA-256: 6d83991604d1ce461236307e14bd9e9b7552edc6cf3fb582544900499de65755
font_01_sfnt_off0001121a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1121A 11216 bytes
SHA-256: f0d8dd8b17eff1af9389d92b9e000ccedd7d79e2442ee9e5af6bb02c90603f7e
font_02_sfnt_off00012c45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C45 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1