Malicious PDF — malware analysis report

Static analysis result for SHA-256 57d648f4cc4b3ce5…

MALICIOUS

PDF

45.8 KB Created: 2021-06-03 21:46:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 35d332a27bb2694091214f45b0cfe4fb SHA-1: cb4a9dc20f2dab7c5904c16fd0e0a25e044c0a31 SHA-256: 57d648f4cc4b3ce5988289f4209de50eb1cce87f4a6add058c9d448e86f97468
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a lure related to free game items and hacks, directing users to a suspicious URL. The ML classifier also flagged this PDF as malicious. The primary malicious URL identified is https://netcdn.online/app/479516143/minecraft-bedrock-edition-pc-download-free-game-hack, which likely serves as a landing page for malware or a phishing attempt. No scripts were extracted, but the document's structure and embedded URIs indicate a social engineering tactic to trick users into downloading potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.online/app/479516143/minecraft-bedrock-edition-pc-download-free-game-hack PDF link annotation
    • https://www.bridalguide.com/sites/default/files/files/roblox-free-items_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/how-to-get-free-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/free-robux-live_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/free-games-like-coin-master_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/is-minecraft-free_GM479516143.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/daily-coin-master-free-spin-apk_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/easy-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/coin-master-free-spins-android_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/coin-master-heaven-daily-free-spins_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/free-robux-app_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000056e7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x56E7 24720 bytes
SHA-256: 131aeedab3302c3bbf1d40b2ead9243c3b324692a45dc8e5b7e94dcc53168d11
font_01_sfnt_off00008efc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EFC 18828 bytes
SHA-256: bab883dfc84e1a3f345dfae0998a7e69f5c6c1aec602e5a20de586714fc0e9f0

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