Malicious PDF — malware analysis report

Static analysis result for SHA-256 38ab07b61fa04570…

MALICIOUS

PDF

79.0 KB Created: 2021-02-20 12:19:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 12c7b2f6c2884d7061f8ed9bc6a87d35 SHA-1: 25917b6755f956c05eaf61351c2aa3a896f3341e SHA-256: 38ab07b61fa04570059b7f7f6bcea43369f26d68f2cd33d43cc21da411b7fb8b
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware download site. The document body, though heavily obfuscated, suggests a lure related to creating a life story book, which is a common social engineering tactic.

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://bologen.ru/123?utm_term=how+to+make+a+life+story+book PDF link annotation
    • https://cdn.sqhk.co/xoradofexul/8hckcia/top_up_genshin_impact_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/sarunasol/aijggMv/web_browser_download_for_pc_windows_7.pdfIn PDF document text
    • http://italywow.pro/xaworamozasomofkn27r.pdfIn PDF document text
    • https://cdn.sqhk.co/wukibezoso/jjgiyjh/12031825052.pdfIn PDF document text
    • http://zespodsvetkoy.site/neo_lms_login_university_of_san_agustine1kpc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376600/normal_60059aa10597f.pdfIn PDF document text
    • https://cdn.sqhk.co/muzolorakow/LXbYiji/samsung_internet_browser_apk_beta.pdfIn PDF document text
    • http://lifeit.pro/msi_h81m-p33_drivers_free_download8e8ay.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475738/normal_5febdacd592a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371020/normal_6021aecbd2954.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379221/normal_5fede31128a70.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/nisoxow/sogomojumap.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/in_app_billing_android_github.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/libertango_piano_trio_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/nefokuwedopil.pdfIn PDF document text
    • https://s3.amazonaws.com/timituvupame/gunoba.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_off0000f48e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF48E 5272 bytes
SHA-256: a039ea779da31b936c1828aaf2df4dfaeab86a95f3edbaeb8c144f116e2e26d3
font_01_sfnt_off0001067a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1067A 11440 bytes
SHA-256: f3795da18deea55a0203e13e95278abbcad68898c6bf15ce1c9cb6e39c380921

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