Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a6dbbef90d0fc33…

MALICIOUS

PDF

40.6 KB Created: 2021-05-19 21:01:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 962cfec313baf6700052cdb8f70fc082 SHA-1: 21cc53f6e1b90fafa64d1f4b7fe8dbd8c46b3500 SHA-256: 2a6dbbef90d0fc33b3bb7df3915f2a5f84834f4c76bc9159bb87c36bdec61f45
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a high-confidence heuristic firing for a game hack redirect lure, pointing to a URL promising free game currency. The document body and embedded URLs reinforce this lure, suggesting the primary goal is to redirect users to potentially malicious sites. No scripts were extracted from this sample, limiting further analysis of its execution flow.

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/406889139/free-coin-master-spins-link-game-hack PDF link annotation
    • http://www.mieczewo.com/images/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://www.mieczewo.com/images/coin-master-spin-and-coins-free_GM406889139.pdfIn PDF document text
    • http://www.mieczewo.com/images/wurst-hacks_GM479516143.pdfIn PDF document text
    • http://www.mieczewo.com/images/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://www.mieczewo.com/images/earn-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://www.mieczewo.com/images/play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://www.mieczewo.com/images/tiktok-free-online-download_GM835599320.pdfIn PDF document text
    • http://www.mieczewo.com/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.mieczewo.com/images/get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.mieczewo.com/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.mieczewo.com/images/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.mieczewo.com/images/how-to-get-free-xp-in-pokemon-go_GM1094591345.pdfIn PDF document text
    • http://www.mieczewo.com/images/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://www.mieczewo.com/images/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://www.mieczewo.com/images/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://www.mieczewo.com/images/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://www.mieczewo.com/images/coin-master-3rd-village-free-2021-gift-card_GM406889139.pdfIn PDF document text
    • http://www.mieczewo.com/images/mcpe-hack-client_GM479516143.pdfIn PDF document text
    • http://www.mieczewo.com/images/tiktok-free-views_GM835599320.pdfIn PDF document text
    • http://www.mieczewo.com/images/free-spins-coin-master-hack-2021_GM406889139.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_off000045b5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45B5 24316 bytes
SHA-256: b523030ed2201307beda63107d2f4c9db76c37c6272f1388491c477b392849b9
font_01_sfnt_off00007d09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D09 18056 bytes
SHA-256: 3a13f115a00b8b7b194300b8b076c3bf70984f89fe406390bc378e2507b22e35

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