Malicious PDF — malware analysis report

Static analysis result for SHA-256 3393f0dcca487003…

MALICIOUS

PDF

45.6 KB Created: 2021-06-03 09:12:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 35c7ee4bd3905c07585f3e32d2f73f35 SHA-1: 1da915a1c998180913b5aafa8245a0be23c4812b SHA-256: 3393f0dcca48700325dafdef5a21c8b53c208db852a78cfae00dbdd2a3ca8ace
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game currency or hacks, directing users to a malicious URL. The ML classifier strongly indicated maliciousness, and the embedded link is a common tactic for phishing or malware distribution. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/431946152/get-free-robux-game-hack PDF link annotation
    • http://laboratorium.sman2metro.sch.id//repository/mosttechs-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/coin-master-spins-for-free_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/robux-offer-wall_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/tiktok-free-7-day_GM835599320.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/robux-xyz_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/roblox-com-r_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/minecraft-windows-10-hack-client-2021_GM479516143.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/apk-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/coin-master-hack-facebook_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/tiktok-free-watermark_GM835599320.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/avatar-roblox-game_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/app-master_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/can-you-host-a-minecraft-server-for-free_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_004_off00005262.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5262 26648 bytes
SHA-256: b89561853c345413f938c77c4cbbb629d5fee3d3a6a210582839338a17a11666
font_01_sfnt_off00009063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9063 18120 bytes
SHA-256: 79ac164380d838bf2943c127f808202d45f8751c05dbd036140e6fb9b1b49848

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