Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d76be37c2ea6a75…

MALICIOUS

PDF

42.1 KB Created: 2021-05-12 13:26:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 15dd50f4c51568f72846f7ac90a2657e SHA-1: 26444f7353008e1d8085e6a488247438a846cd29 SHA-256: 3d76be37c2ea6a7531048f9b31e372b085572fa6d9e5aa4ad5c5c15bf8dff51a
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 0.9971

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.xyz/app/479516143/download-minecraft-java-edition-free-game-hack PDF link annotation
    • http://repository.poliven.ac.id//repository/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/coin-master-official-fan-page_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/coin-master-free-attack-link_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/coin-master-spin-and-coins-free_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/coin-master-cheat-engine-hack_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/coin-master-hack-without-verification-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/coin-master-free-spins-for-iphone_GM406889139.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_003_off000049f3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49F3 24604 bytes
SHA-256: ce9f47f7e0ef2daf7c42119d9ef7fb63c0c989cf9323f4210c5cbbbf58b139ae
font_01_sfnt_off0000812e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x812E 18572 bytes
SHA-256: 152a86aa2203223781754dc8feb17de20161f8fdf6bb3f234180a5bd0d211371

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