Malicious PDF — malware analysis report

Static analysis result for SHA-256 6392d6f47b8a292d…

MALICIOUS

PDF

46.6 KB Created: 2021-06-03 06:22:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f1e5d5a29e891918d35373834095d2ed SHA-1: cfb0b174bda7793791535bccaf8b606ded40fc67 SHA-256: 6392d6f47b8a292d2c09dae9e84ecf237cba39a07d4603613e62458dfb419583
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a high-confidence heuristic firing for linking to a game hack generator, supported by a visual download button lure. The document body and embedded URLs point to a deceptive lure for a 'Coin Master Hack', indicating a social engineering tactic to trick users into visiting a malicious URL. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

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.online/app/406889139/coin-master-hack-android-game-hack PDF link annotation
    • https://lib.unitri.ac.id//repository/coin-master-free-spin-download_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/robux-survey_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/roblox-earn-robux_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/open-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/give-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-games-download-free_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/coin-master-free-spins-apple_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/where-to-get-robux_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/coin-master-free-spins-gratis_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/coin-master-attack-hack-apk_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004f04.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F04 25628 bytes
SHA-256: f95f075a7f03007ceb7af9ee0d4fb3f097128cfc47ee380e08d3c7f8401c84cc
font_01_sfnt_off000089a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89A5 17888 bytes
SHA-256: a3f3c6358bf6c689f14a31b2bec7c705949e82e1ea95935703b782b8d0a54cd0
font_02_sfnt_off0000aa90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA90 3264 bytes
SHA-256: e32c06502c11b52acb5e814091c5fdbffd1e2a904ac7a9cfb8b5b180bd139088

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