Malicious PDF — malware analysis report

Static analysis result for SHA-256 14efc23537a899cc…

MALICIOUS

PDF

33.2 KB Created: 2021-07-19 01:14:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 77351924c86657403f42ab5509d670f6 SHA-1: ab3284286c8e8bc3fabc4aea3ab83227c84bd4d4 SHA-256: 14efc23537a899ccfd46643986d1377e507c99108278f4efc1bbbc636078776c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that masquerade as game hacks or free generators for popular games. The primary link, 'http://netcdn.tw/app/406889139/coin-master-free-spins-promo-code-game-hack', is identified as a lure for game hacks. The document's structure and embedded URLs suggest an attempt to trick users into visiting malicious websites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9506

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/406889139/coin-master-free-spins-promo-code-game-hack PDF link annotation
    • http://genialica.com/images/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://genialica.com/images/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://genialica.com/images/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://genialica.com/images/free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://genialica.com/images/roblox-fly-hack_GM431946152.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_002_off000029d2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x29D2 23760 bytes
SHA-256: fb8e6aa05c6ec250ca3c26b6c74216e40b7ba2bbe72012a97d909729f999612f
font_01_sfnt_off00005f94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F94 18476 bytes
SHA-256: dc3ef91c42b56b19e880a129857b9cc4209ff723fc15082788877c1745c42c0a

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