Malicious PDF — malware analysis report

Static analysis result for SHA-256 54250a7f437fccc3…

MALICIOUS

PDF

76.3 KB Created: 2021-02-21 16:02:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 8e0f19731dd521f69a4f83e1dd128c13 SHA-1: 7224e11fdddfe2471dc726e6e8769e9e1af8b094 SHA-256: 54250a7f437fccc33c9f75c39c19103ccd719b94fa7b5d9c01e62b19385ec252
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a website offering a modified version of the Coin Master game, suggesting a lure for potentially unwanted software or a phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the content suggest a phishing or social engineering attack.

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://leonvi.ru/wix?keyword=coin+master+mod+apk+version+3.5.120 PDF link annotation
    • https://cdn.sqhk.co/wunasesev/hfU10ig/97417457386.pdfIn PDF document text
    • https://cdn.sqhk.co/tolononof/i7YXYiK/national_geographic_channel_number_on_dish_tv.pdfIn PDF document text
    • https://cdn.sqhk.co/zebenane/jdjdmjd/4888595678.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418987/normal_5ffe519ad3c1f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464330/normal_5feb1d1adbf8c.pdfIn PDF document text
    • https://cdn.sqhk.co/zudipoje/hBTjgVI/fokufexugezise.pdfIn PDF document text
    • https://cdn.sqhk.co/kusamika/gehcgcu/boxajiseriras.pdfIn PDF document text
    • https://cdn.sqhk.co/likafupat/UoLAidN/98504818393.pdfIn PDF document text
    • https://cdn.sqhk.co/parapirer/jvPifji/my_ipad_calendar_events_are_gone.pdfIn PDF document text
    • https://cdn.sqhk.co/gukokefa/cidIDLE/99656791157.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477373/normal_6026f67511f42.pdfIn PDF document text
    • https://cdn.sqhk.co/jilijibimi/igiggc3/strategy_reality_tv_shows_that_are_fake.pdfIn PDF document text
    • https://cdn.sqhk.co/wujozuzewed/igaibNs/aquarium_fish_tank_filter_bio-_balls_filtration.pdfIn PDF document text
    • https://cdn.sqhk.co/zolilobup/HJjh69K/space_frontier_2_mod_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/velomegu/ic5Lahc/91663426268.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/xefejevife/12351763645.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/argano_manuale_funzionamento.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/assamese_theatre_video_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/minecraft_apple_ipad.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_off0000e43d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE43D 5748 bytes
SHA-256: bbad53ea8da0c33c2fad6c8d63321f7669ffc756cbcca75bf01d456c9b1b4322
font_01_sfnt_off0000f7c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C9 14184 bytes
SHA-256: 9af8e69c80a1af8479d01c4a3e282f78aef3bc0651b13e4fd426fd9ba272d655

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