Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4bd019f74048862…

MALICIOUS

PDF

43.8 KB Created: 2021-05-13 02:17:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 981b92368deeb71ceb19149586750a98 SHA-1: 7b656ba7150fa125fecd44b5c526b94c106fe516 SHA-256: b4bd019f74048862e5e14ffbb487d9c637735807bb7583e766f672dade183c74
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure, masquerading as game hacks and generators. The primary redirector URL is https://netcdn.xyz/app/406889139/how-to-hack-coin-master-ios-jailbreak-game-hack. The document body also contains numerous links to other PDF files hosted on schoolsupportandbeyond.org, likely part of a phishing or malware distribution chain. No scripts were extracted, but the embedded URLs and the nature of the lures strongly suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/how-to-hack-coin-master-ios-jailbreak-game-hack In PDF document text
    • http://schoolsupportandbeyond.org/images/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/free-spin-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/hack-coin-master-for-android_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/free-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/free-spins-on-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/coin-master-hack-tool-for-pc_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/roblox-top_GM431946152.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/coin-master-free-rewards-link_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/how-to-earn-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/coin-master-fun-hack_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_off00004b09.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B09 27368 bytes
SHA-256: 0c5eac8b8f8fd651a1f4382e4a4128dbe13acbb6c5f3c0ceeff4e744ad3c84fb
font_01_sfnt_off00008913.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8913 18280 bytes
SHA-256: 696217ece26025caf6b49e3e2a1a7998402a438fab3f8ae4039d829799c9dc6e

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