Malicious PDF — malware analysis report

Static analysis result for SHA-256 12db333db0f227c2…

MALICIOUS

PDF

34.7 KB Created: 2021-05-23 14:06:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: b1c64b9c61ee5d3b0e116ac8b4061fc3 SHA-1: 1dea525f51e56d655e09138297df2f14bd74137f SHA-256: 12db333db0f227c29342337fa1956b44f8884bfc50177b200f8b50ea13185d03
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links and a call-to-action phrase designed to trick users into visiting a website offering 'free generators' or 'game hacks'. The primary link redirects to a site promising free TikTok likes, which is a common lure for phishing or malware distribution. The ML classifier also flagged this PDF as malicious, supporting the assessment that it is part of a malicious campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9508

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/835599320/free-tiktok-likes-app-game-hack PDF link annotation
    • http://bluediffusion.it/images/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://bluediffusion.it/images/coin-master-100-free-spins-link_GM406889139.pdfIn PDF document text
    • http://bluediffusion.it/images/is-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://bluediffusion.it/images/how-to-get-free-spins-on-coin-master-without-waiting_GM406889139.pdfIn PDF document text
    • http://bluediffusion.it/images/minecraft-hacks-pc_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_002_off00003110.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3110 24028 bytes
SHA-256: fdbead30bdabdd13bab2d46c7ff1db5ea90bf5b51bb2f671c8f6114d216bec6d
font_01_sfnt_off00006845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6845 17632 bytes
SHA-256: 7e13fbc4119f45c5ff512709f8e7b8078fcbed6cc64991a23ef627420002bfc1

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