Malicious PDF — malware analysis report

Static analysis result for SHA-256 48b03b1092065443…

MALICIOUS

PDF

43.6 KB Created: 2021-06-03 11:39:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a20e837f57b7b4320e2130f88c2b28a2 SHA-1: 9d8ae3db469dadf3a5cf794769ab9c70172b3fd3 SHA-256: 48b03b1092065443549aaa21873121c27fa500ffa6b425089b699e45b4ff9aa2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs that redirect to websites offering game hacks and free in-game currency, a common lure for phishing or malware distribution. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates this malicious intent. Although no scripts were explicitly extracted, the nature of the embedded URLs suggests a potential for JavaScript execution or further malicious content delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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-game-hack PDF link annotation
    • https://pustaka.mic.sch.id//repository/coin-master-apk-hack-download_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/coin-master-daily-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/free-game-pack-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/free-roblox-com_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/coin-master-spin-and-coins-free_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/haktuts-coin-master-today_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/minecraft-pocket-edition-free-ios_GM479516143.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/haktuts-coin-master-free-daily-spins_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_004_off000050c2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50C2 24928 bytes
SHA-256: eedf92f1b0c1c80dac1b5467f0748dbdcc2fb6ca195e2602955cc183b6d4b683
font_01_sfnt_off00008a03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A03 17544 bytes
SHA-256: 5ee316c89f58fa7ece53e10d1822e70a80b2e7ece9f31707ca69690d36fdc75d

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