Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e434f87423f6105…

MALICIOUS

PDF

48.4 KB Created: 2021-05-17 14:14:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6a9575264dcb87b7990ce080edc2e5c1 SHA-1: e220803c8ed3fda97c25d0a864c40e18f4da12fc SHA-256: 3e434f87423f61052c8889d7e8978f9270a2510a9c94c5fc5adc5bbe40114afd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting 'free generators' and 'game hacks' to lure users. The primary redirector identified is https://netcdn.xyz/app/431946152/robux-cheat-game-hack, which is likely used to deliver a second-stage payload or phish for credentials. The document body and heuristics strongly indicate a social engineering tactic to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/431946152/robux-cheat-game-hack In PDF document text
    • http://balkanin.com/images/coin-master-hack-apk-facebook-login_GM406889139.pdfIn PDF document text
    • http://balkanin.com/images/wizard-hacks_GM479516143.pdfIn PDF document text
    • http://balkanin.com/images/free-robux-website_GM431946152.pdfIn PDF document text
    • http://balkanin.com/images/rbx-website_GM431946152.pdfIn PDF document text
    • http://balkanin.com/images/minecraft-free-download-mac-full-version_GM479516143.pdfIn PDF document text
    • http://balkanin.com/images/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://balkanin.com/images/coin-master-hack-tool-access-online-generator_GM406889139.pdfIn PDF document text
    • http://balkanin.com/images/coin-master-online_GM406889139.pdfIn PDF document text
    • http://balkanin.com/images/free-vip-server-roblox_GM431946152.pdfIn PDF document text
    • http://balkanin.com/images/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • http://balkanin.com/images/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://balkanin.com/images/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://balkanin.com/images/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://balkanin.com/images/does-roblox-premium-expire_GM431946152.pdfIn PDF document text
    • http://balkanin.com/images/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://balkanin.com/images/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://balkanin.com/images/free-money-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://balkanin.com/images/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://balkanin.com/images/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://balkanin.com/images/real-coin-master-hacks_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49A4 30300 bytes
SHA-256: a035d13ceb2bc494aa8c058f0fbb71771e839e22f4ca2c205163f7f59435b4df
font_01_sfnt_off00008d8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D8D 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009a9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A9E 18348 bytes
SHA-256: 31fefd4ef1a49768a29abeb91c9cc14de4a71945d96852bd997a0c12cf47c1fe

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