Malicious PDF — malware analysis report

Static analysis result for SHA-256 0139a05bedaad8cb…

MALICIOUS

PDF

36.1 KB Created: 2021-07-06 02:59:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: d39383b469fe60799800c645b5c1c9a8 SHA-1: 483be43a29aea2c70f17ea88cc48eb5b4a5de2af SHA-256: 0139a05bedaad8cbd35d9081c1df1c6c960e2aebca3991d5f006c9c9a3fbeb5e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures related to game hacks and free currency, directing users to external URLs. The primary URL, http://netcdn.tw/app/431946152/how-to-change-your-username-on-roblox-for-free-game-hack, is identified as a redirector for a game hack. While no scripts were extracted, the presence of embedded URLs and the 'game hack redirect lure' heuristic strongly suggest a phishing or malware distribution attempt. The document's content and structure are consistent with a social engineering attack to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/how-to-change-your-username-on-roblox-for-free-game-hack PDF link annotation
    • http://lib.uho.ac.id/library/repository/wurst-115-2_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-hair-roblox-boy_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/ultimate-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/what-is-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-coins-link-2021-deutsch_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/easypoints-gg-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/robux-for-surveys_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-link_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/hack-to-protect-village-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-roblox-accounts-with-builders-club_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-daily-spin-link-app_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/fast-robux-online_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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
font_00_sfnt_off00003468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3468 22668 bytes
SHA-256: 6e92394d162b42f37059f5eb87dc0fe0619f7551559c559cbfd8837ef145c538
font_01_sfnt_off000066dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66DC 19540 bytes
SHA-256: 13561b44f61144c121be84d59be9fad9902bdfea6fe0fd721d4b8ce19c369a19

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