Malicious PDF — malware analysis report

Static analysis result for SHA-256 bde79d4960a49eaa…

MALICIOUS

PDF

34.8 KB Created: 2021-06-18 02:30:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: a8921e2b744096cb8e145665d8a94cc7 SHA-1: bcb5ae5f3ee342e03db820af825c60ac24428996 SHA-256: bde79d4960a49eaa24ea64df238567f7714c65c93b8c70dd42821b32eb9d6f8d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically advertising 'free generators' for games like Roblox. The heuristic firings confirm the presence of malicious redirector links and a lure for game hacks. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to drive users to a malicious site, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-free-5-robux-game-hack In PDF document text
    • https://hekl-software.de/images/e-free-roblox_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/hunting-rifle-hack-roblox-pastebin_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://hekl-software.de/images/coin-master-spins-for-free_GM406889139.pdfIn PDF document text
    • https://hekl-software.de/images/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/ear-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://hekl-software.de/images/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • https://hekl-software.de/images/knife-server-roblox-hack-script_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://hekl-software.de/images/google-roblox-games_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/free-robux-site_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • https://hekl-software.de/images/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • https://hekl-software.de/images/coin-master-hack-mod_GM406889139.pdfIn PDF document text
    • https://hekl-software.de/images/snippet-roblox-hack_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/enter-this-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://hekl-software.de/images/tiktok-like-bot-free_GM835599320.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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
font_00_sfnt_off00003107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3107 22720 bytes
SHA-256: a2525397edf70c7085504138869409627ad0fe1bf1a2bee46b458a2fbfc574ad
font_01_sfnt_off00006418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6418 18736 bytes
SHA-256: e2c3664c70422b1075d0e3d635855d8ee8e6d82cff8f16cd6bd755f7fe764102

Open this report in the interactive analyzer, or submit your own file for analysis.