Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbc2e41c99e7c577…

MALICIOUS

PDF

46.0 KB Created: 2021-05-12 00:30:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: a01ba68848229a267f7856fa5f02a94b SHA-1: e14fc2c87899e3a1da3f6bce8a6482a5b35e8b27 SHA-256: cbc2e41c99e7c577af0966c2d825a9a2464b15be20e0d7c5a0f8762bbb256717
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures related to game hacks and generators, specifically mentioning 'Roblox'. It includes multiple external URLs that likely lead to malicious sites or further phishing attempts. The ML classifier strongly flagged this PDF as malicious, and heuristics indicate it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/i-got-hacked-on-roblox-game-hack PDF link annotation
    • http://library.asih-husada.ac.id/repository/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/2021-roblox_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-spins-for-coin-master-that-work_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-exploit-scripts_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-get-free-roblox-items_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/wurst-client_GM479516143.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/minecraft-free-download-2021_GM479516143.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-do-i-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/minecraft-the-complete-handbook-collection_GM479516143.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-hack-2021-without-verification_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/what-is-coin-master-app_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/hack-coin-master-online_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/no-human-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-girl_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_off0000490c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x490C 24172 bytes
SHA-256: af5b05e352c7aad422433192d8018002db4fb2231e1b6403cf222913633840eb
font_01_sfnt_off0000805e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x805E 4816 bytes
SHA-256: eda38a2aed6a1aa29b455f6653b4cc2402925c6774efc9c432f4c8492a96d7fe
font_02_sfnt_off0000904f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x904F 18460 bytes
SHA-256: a8a49c36ef4b2531a5f792820ad3efe99a39c3e474aae1f279e7d577006455a1

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