Malicious PDF — malware analysis report

Static analysis result for SHA-256 6633c5524e5cd955…

MALICIOUS

PDF

34.5 KB Created: 2021-07-03 21:06:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2ea46fe82554dcc401a633eb615db18b SHA-1: d7f2a97cd4fe203536afbbd5512fe43b0658cf07 SHA-256: 6633c5524e5cd9559e23d1952a46c848dfd506c88b3046160daf05fa0f4416e1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.tw/app/431946152/how-do-you-get-free-robux-without-paying-game-hack PDF link annotation
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-human-verification-on-phone_GM431946152.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/free-robux-with-console_GM431946152.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/free-roblox-account-dispenser_GM431946152.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/blox-rewards_GM431946152.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/free-robux-in-game-tyoe-your-password_GM431946152.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/do-you-get-banned-for-hacking-in-vip-roblox_GM431946152.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/free-roblox-open-groups_GM431946152.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/free-minecraft-java-code_GM479516143.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/rbx-earn_GM431946152.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/coin-master-hack-version-download-2021-ios_GM406889139.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/free-tiktok-likes-generator_GM835599320.pdfIn PDF document text
    • http://elma.man2kotakediri.sch.id/__statics/gudangsoal/files/free-robux-codes-no-verification-2021_GM431946152.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
font_00_sfnt_off00002d22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D22 22456 bytes
SHA-256: 22b30971d308e86199435794e65be710e306547539a5d686c4d65d1c8e61b331
font_01_sfnt_off00005ee1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE1 20132 bytes
SHA-256: a9ef46bf9427767a57211f84010808dc7dc7e4c48ad05ca9a6e16d4f2e8bde0e

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