Malicious PDF — malware analysis report

Static analysis result for SHA-256 8017b51cbff6f792…

MALICIOUS

PDF

46.2 KB Created: 2021-06-08 15:13:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 901c52b379748f87d6dddb1f0a1cd1d3 SHA-1: 46465664bdc9a6d215d6365a115df56a9209337c SHA-256: 8017b51cbff6f7925e091af8fe6602617a4530c521999fdaca95301aed3e5cab
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks, specifically for Roblox and Critical Strike, directing users to a URL that likely hosts malicious content or phishing pages. The presence of multiple embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful sites. No scripts were extracted, but the document's structure and embedded links suggest a social engineering tactic to trick users into clicking through to a malicious resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://netcdn.tw/app/431946152/how-do-you-hack-in-critical-strike-roblox-game-hack PDF link annotation
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/microsoft-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-may-2021_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/free-robux-ad_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/free-spins-coin-master-cheat_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/download-coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/free-spin-card-exchange-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/free-links-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/clean-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005486.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5486 25632 bytes
SHA-256: 41cfd66795d2e182b8dae37652739e56008cfcde20a14acd33adbfe2176b4cf9
font_01_sfnt_off00008fe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FE6 19040 bytes
SHA-256: 125c8234b226c70e07ebb0c5d6f8280928325b829ac7323376e8c3a21f421928

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