Malicious PDF — malware analysis report

Static analysis result for SHA-256 0692a57f5c175f62…

MALICIOUS

PDF

44.4 KB Created: 2021-05-13 09:30:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 69582b00febf3f930f9e5518331cb6a3 SHA-1: fcbeb58304891eb246705ade1d87140f7f1dac98 SHA-256: 0692a57f5c175f62449810ffa2dfeca0af58e52ca159ce397f17710745407f1a
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a remote-support lure. 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 0.9632

Heuristics 5

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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.xyz/app/479516143/minecraft-kill-aura-game-hack PDF link annotation
    • https://library.sman1berau.sch.id/repository/como-hackear-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-roblox-shirt-templates_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-roblox-premium_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-download-app_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-bedrock-free-download_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/game-give-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/download-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-minecraft-coins_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-tool-hack_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-minecraft-generator_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/worst-roblox-avatars_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-hack-download-ios_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/best-free-roblox-executor_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/can-you-get-robux-for-free_GM431946152.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_003_off00004b09.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B09 24712 bytes
SHA-256: 780e0561f0f3bea6d129564abdb7456f9a472b6444fea1a731b592016fb1df53
font_01_sfnt_off000082c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82C8 2892 bytes
SHA-256: c2578a292634a901613c1dd9f9883dd4930e6811e59ae03d696f263e56ea17b4
font_02_sfnt_off00008cb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CB2 17780 bytes
SHA-256: c2709f909e3745f66adc4078fb792a80af786db63b40672baf243408e39a3681

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