Malicious PDF — malware analysis report

Static analysis result for SHA-256 0336f3dc9dc04c56…

MALICIOUS

PDF

35.6 KB Created: 2021-06-20 07:48:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: ca4a94becc3d7b6e9339c3b1b4e33cad SHA-1: 3fa8b2fce3160758b57da0bdc36de19de3d95e29 SHA-256: 0336f3dc9dc04c56ed4e94a5f375cc3dff585571dfeb92a383238758562d77fc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document contains a lure for a game hack, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a download button lure reinforces the deceptive nature of the document. The primary goal appears to be tricking the user into visiting a malicious site, likely to download further malware or engage in a scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/406889139/coin-master-hack-apk-game-hack PDF link annotation
    • https://e-learning.mtsn2kotabandung.sch.id/__statics/gudangsoal/files/freespincoin-masterlinkdownload_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn2kotabandung.sch.id/__statics/gudangsoal/files/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn2kotabandung.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn2kotabandung.sch.id/__statics/gudangsoal/files/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn2kotabandung.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn2kotabandung.sch.id/__statics/gudangsoal/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn2kotabandung.sch.id/__statics/gudangsoal/files/roblox-free-followers_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn2kotabandung.sch.id/__statics/gudangsoal/files/roblox-online-free_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn2kotabandung.sch.id/__statics/gudangsoal/files/how-to-get-robux-fast_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn2kotabandung.sch.id/__statics/gudangsoal/files/roblox-cool-free-skins_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn2kotabandung.sch.id/__statics/gudangsoal/files/free-robux-codes-december-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn2kotabandung.sch.id/__statics/gudangsoal/files/roblox-mad-city-cheats_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn2kotabandung.sch.id/__statics/gudangsoal/files/free-spins-and-coins-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn2kotabandung.sch.id/__statics/gudangsoal/files/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn2kotabandung.sch.id/__statics/gudangsoal/files/coin-master-hack-no-verification-no-signup_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn2kotabandung.sch.id/__statics/gudangsoal/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn2kotabandung.sch.id/__statics/gudangsoal/files/robux-converter_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn2kotabandung.sch.id/__statics/gudangsoal/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn2kotabandung.sch.id/__statics/gudangsoal/files/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn2kotabandung.sch.id/__statics/gudangsoal/files/simplysarc_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003616.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3616 22568 bytes
SHA-256: f9d42d7b72518269bf542a20aa57b406948e77cf115a12e84984d5ebe06aa562
font_01_sfnt_off000068ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68AB 18180 bytes
SHA-256: 5b637a8a036eab97bffff91a515cae84fc40b6bddd589e778cc2e69a12b03167

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