Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fde7b3568c49c8a…

MALICIOUS

PDF

72.2 KB Created: 2021-02-26 00:10:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: e987578cac5c5c5a864964531d4f43da SHA-1: 24dd86e21cba1f766ded3ec41ba449a0214bbcf4 SHA-256: 4fde7b3568c49c8ab6b14cf832eb88b6e26905e182c24740649ba8dd88f4121f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, identified as a link farm, with the primary URL being a lure for 'how to score wiat iii essay'. This heuristic, combined with ML and ClamAV detections, strongly suggests a malicious intent to redirect users to potentially harmful content. While no scripts were explicitly extracted, the PDF structure and embedded URIs indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8267

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://jottigo.ru/award?keyword=how+to+score+wiat+iii+essay PDF link annotation
    • http://sowopezamiw.medianewsonline.com/youth_football_playbook.pdfIn PDF document text
    • https://munuteme.weebly.com/uploads/1/3/4/8/134862418/5fc9e5facefe327.pdfIn PDF document text
    • https://nubipudovolena.weebly.com/uploads/1/3/4/0/134012318/788b638dab6a9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498986/normal_5fdd1d1de5de7.pdfIn PDF document text
    • https://lazumuron.weebly.com/uploads/1/3/4/8/134863931/52c8fe9840cce2.pdfIn PDF document text
    • https://sudejewakigalo.weebly.com/uploads/1/3/4/0/134040490/d3e5b23a7b827.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426261/normal_5fc8e333e4a55.pdfIn PDF document text
    • http://rivozuzeno.mywebcommunity.org/casio_fx-9750gii_graphing_calculator_price.pdfIn PDF document text
    • http://veruvipavopa.getenjoyment.net/wexusewipibamaxiv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444647/normal_5fe178b382f09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422368/normal_601b8923cba3a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jokosen.atwebpages.com/what_is_the_story_of_robinson_crusoe.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/physiology_book_in_hindi.pdfIn PDF document text
    • http://tivakifuzir.atwebpages.com/nipufakaxapakek.pdfIn PDF document text
    • http://bifovigavij.myartsonline.com/pewulumugabokapaga.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/factual_report_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tugafebip/34194237926.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/cara_cheat_game_mobile_legend_di_android.pdfIn PDF document text
    • http://zuputes.atwebpages.com/nursing_job_interview_questions_tell_me_about_yourself.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/best_survival_games_2020.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011401.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11401 4916 bytes
SHA-256: 8d1f4061ec6b14946743afc5395419c2bf470272ccdc6b774056659f46148d6c