Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6fbbedd5ca87abc…

MALICIOUS

PDF

70.7 KB Created: 2021-02-20 20:08:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8440e3b25656ba47e9dbe1fc0fdd05f1 SHA-1: 73769507ba6146e18f76920c843aedeffc142002 SHA-256: f6fbbedd5ca87abc5655ef7d754e51206c78810576882b724c38b244aef76bb6
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://druttle.ru/wix?keyword=texe+marrs+codex+magica+pdf
    • https://cdn-cms.f-static.net/uploads/4471479/normal_5fea371776098.pdf
    • http://particulieres-societegenerale.best/anthem_game_digital9n7k4.pdf
    • http://teasmall.space/next_fleece_fitted_sheetsn41kr.pdf
    • http://theandyhong.com/pibipidedonenelotopez26i.pdf
    • http://dkmz3.club/1563046091870bq7.pdf
    • http://salearea.pro/coleo_primeiros_passos_editora_brasilienseu1egm.pdf
    • http://voiprormul.xyz/retap1flo7.pdf
    • http://insta-sale.site/access_canberra_formsq2vbb.pdf
    • http://govejulij.22web.org/newusofel.pdf
    • http://saxefitipar.iblogger.org/aggiornamento_android_10_samsung_s10.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://welavosapo.rf.gd/formal_and_informal_language_worksheets_3rd_grade.pdf
    • https://s3.amazonaws.com/woxewiwupir/canon_lide_25.pdf
    • http://fulawumobolofog.epizy.com/asbestos_awareness_training.pdf
    • https://s3.amazonaws.com/zomuzigo/abbyy_finereader_9._0_sprint.pdf
    • https://s3.amazonaws.com/lefemijip/bupulimafodugadipi.pdf
    • https://s3.amazonaws.com/nuxomigo/acana_grasslands_dog_food_feeding_guide.pdf
    • https://s3.amazonaws.com/tejuvonixag/3405722232.pdf
    • http://kurujabarufuxe.rf.gd/roll_up_banner_template_vector.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d69e.bin
1a8c9526f755558e2c13cbe057fe9bd6f86b14936474d9090a7dd4ee22f84a39		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD69E 5460 bytes
font_01_sfnt_off0000e91b.bin
3bd1a0a788ce65eb25e9696df86687ee48c5487ec5ecac6b8efb14b8c1baae93		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE91B 10772 bytes

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