Malicious PDF — malware analysis report

Static analysis result for SHA-256 83714833318233fe…

MALICIOUS

PDF

41.6 KB Created: 2021-05-13 21:33:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c19bf16fd44c18cffe3e66835fccca8d SHA-1: e7286b40b2e80ec5b0df9fd5d17f49c4c911f4b3 SHA-256: 83714833318233fee590b2018d66689bb1d5d8908586d5e2d7514d09fc1856bd
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are designed as lures for game hacks and free currency generators, specifically targeting popular games like Roblox and Coin Master. The primary link, https://netcdn.xyz/app/431946152/how-do-i-get-robux-on-roblox-game-hack, is flagged as a redirector for such scams. While no scripts were directly extracted, the presence of embedded URLs and the 'game hack redirect lure' heuristic strongly suggest a phishing or malware distribution attempt.

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/431946152/how-do-i-get-robux-on-roblox-game-hack PDF link annotation
    • http://sauer-umweltservice.de/images/coin-and-spin_GM406889139.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/how-to-download-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/robux-free-co_GM431946152.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/real-working-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/robux-free-online_GM431946152.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/how-to-get-a-refund-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/demon-roblox_GM431946152.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://sauer-umweltservice.de/images/minecraft-free-download-android-apk_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_003_off000043bd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x43BD 26952 bytes
SHA-256: 13f579f25971e481854a75e0159a43c8ee1deef9f8843dca53d8544c9b8dd665
font_01_sfnt_off00007fe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE7 18360 bytes
SHA-256: 22a3ac7fd5a8e7ded2d491dbb667dc3ed9186f29057d67e789ef353447e020ef

Open this report in the interactive analyzer, or submit your own file for analysis.