Malicious PDF — malware analysis report

Static analysis result for SHA-256 da3e23a27c91de09…

MALICIOUS

PDF

79.3 KB Created: 2021-02-13 20:03:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 7039941f0d2563cddb7c196008de8a4d SHA-1: a42b76060b46da03f7963674f2523b923729bded SHA-256: da3e23a27c91de091970aef1e2938e2456ecaf5bd0af2d2efa7ccaf9db1acc27
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, appears to be a lure related to a game, aiming to trick users into visiting the malicious URL. No scripts were extracted, but the presence of external URIs and the overall detection indicate a malicious intent to redirect users to potentially harmful content.

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://jacksth.ru/123?utm_term=epic+battle+fantasy+4+hacked+2.0.5 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4460231/normal_601d186906993.pdfIn PDF document text
    • http://legendarycraft.ru/jorge_bucay_dejame_que_te_cuente_englishvk2i3.pdfIn PDF document text
    • http://italia-doc.space/sanujirujopufijapupuzifugg5q.pdfIn PDF document text
    • http://store50off.info/darerg7pd2.pdfIn PDF document text
    • http://reetodo.online/destroyer_2018_parents_guidemavy5.pdfIn PDF document text
    • http://jigatinapa.22web.org/34975068619.pdfIn PDF document text
    • http://repair-monokoles.ru/jeffreys_bay_surf_report_windguruebyt3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468828/normal_5ff6c705734da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366388/normal_5fee7440be7a2.pdfIn PDF document text
    • http://zhenskiizhurnal.ru/bharathi_kannamma_tamil_movie_hdpjou5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393637/normal_601dac2160cb4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jokizexolej.epizy.com/calendario_epidemiologico_2018_colombia.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/fewokalozelanuru.pdfIn PDF document text
    • http://pususarejopo.epizy.com/techsmith_made_with_camtasia_free_trial.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/bowers_and_wilkins_formation_bar_review.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/93678197799.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/33627145925.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_off0000f7af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7AF 5928 bytes
SHA-256: b7f1f48e4c3fb4999e6c2c77d29df9a787a42570a758440da943197619d3033c
font_01_sfnt_off00010bf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BF3 10456 bytes
SHA-256: 1ee718e95e2ca53eb12f57e956be1823924293874abd39e5d4e7e161f4922151

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