Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeaf00fb31df8f2f…

MALICIOUS

PDF

77.8 KB Created: 2021-02-23 14:48:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 0b5a4cdf9917b635057f2b5310831a40 SHA-1: 9daa623fda35839aa05437529f2212305dfae8f4 SHA-256: eeaf00fb31df8f2fb086518511a5948d73953633310b2170eef909f93384538a
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious URL, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains text related to a car battery replacement, suggesting a lure to trick users into visiting the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=1998+lexus+es300+battery+replacement PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369907/normal_5fefd0f9ecd85.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465908/normal_5fe2d16a308bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387925/normal_5fdb658965117.pdfIn PDF document text
    • https://cdn.sqhk.co/nazalugewu/ggjenja/best_buy_las_vegas_rainbow.pdfIn PDF document text
    • https://cdn.sqhk.co/jobiwokojo/bjh3jgm/youtube_best_tiktok_videos.pdfIn PDF document text
    • https://cdn.sqhk.co/pisapaxosabo/glji3ia/fun_facts_i_should_know.pdfIn PDF document text
    • https://cdn.sqhk.co/didatife/jjIGibQ/19060644726.pdfIn PDF document text
    • https://cdn.sqhk.co/mowanideju/Jhjgegi/pejosezudoxadid.pdfIn PDF document text
    • https://cdn.sqhk.co/wakivugex/d1hgl8F/kitchen_tiles_design_pictures.pdfIn PDF document text
    • https://cdn.sqhk.co/koxajavu/iaY2Nij/actiondirector_video_editor_edit_videos_fast.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482403/normal_5fea0496dc53b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489615/normal_5fcd82971ed9f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404753/normal_5fe4282513224.pdfIn PDF document text
    • https://cdn.sqhk.co/mofekuma/jigqhdL/wibar.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kumasala/voxutitimefowuduzuguzim.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/92184541436.pdfIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/vefigenegada.pdfIn PDF document text
    • https://s3.amazonaws.com/lekezaru/espejos_eduardo_galeano_gratis.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_off0000ef8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF8B 6004 bytes
SHA-256: b30177fc4feab9297ef670d4d1aa561fba8dc716062790c6e56d8c682ddbb870
font_01_sfnt_off000103e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103E5 11312 bytes
SHA-256: 233690a5b868e5d8b8af452af216e13ba9f614754c05cce99418cdd4a38ed8c0

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