Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fb808b1819e8209…

MALICIOUS

PDF

72.8 KB Created: 2021-02-22 21:50:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 29b25fdf75d262450631a5e487428a6d SHA-1: 955a745ac7d379587729e3ac9d317971cc58ceb9 SHA-256: 8fb808b1819e82091789e804a532fcd8cb7a51c4057397dc173fe0a203ef792c
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'Zen Buddhism' to mask the malicious activity. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly suggest a phishing or credential harvesting attempt.

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/123?utm_term=what+are+the+3+pillars+of+zen PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4405651/normal_5fcaaff89cc85.pdfIn PDF document text
    • http://powerhdniy.space/blender_2._8_manualagdql.pdfIn PDF document text
    • http://greyfruit.space/sunset_beach_wallpaper_freebls6m.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393763/normal_602fd41b28d49.pdfIn PDF document text
    • http://fuzuxozexuvir.22web.org/16910082595.pdfIn PDF document text
    • http://ig-socialmedia.xyz/313832915880ae5t.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tekunobujolid.epizy.com/wapogevopenejowuzonuwit.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/immunization_form.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/fojolakegoboli.pdfIn PDF document text
    • https://s3.amazonaws.com/sefepugolupalax/gutefobig.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/97905505418.pdfIn PDF document text
    • https://s3.amazonaws.com/gonasidupij/2953337588.pdfIn PDF document text
    • http://wawutanow.epizy.com/liturilino.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/dnr_uk_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/vefagotoje/history_of_the_world_part_1_movie_poster.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/linixefetunudowitolelo.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/fundamentos_psicolgicos_da_educao.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/baby_scattergories_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/viva_video_songs_free.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dff7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFF7 5216 bytes
SHA-256: ae311292db68b785ae37c9b4971d9cba64ec00de90639aa06bb169428395d58a
font_01_sfnt_off0000f1cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1CB 10716 bytes
SHA-256: e9f2a9593c9c2c153e95777b9f2baea72396c7b0992886c1f06358a1297e8014

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