Malicious PDF — malware analysis report

Static analysis result for SHA-256 20f240ad441d0ded…

MALICIOUS

PDF

41.9 KB Created: 2021-05-17 11:35:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8bff9c3efb0e6a0e3c9e176de3d418d6 SHA-1: b1074bca6e32fba2133bfedcf5e092b6a24d0c05 SHA-256: 20f240ad441d0dedd9d1d407341df2bb3e6f5438cac44292a130df87d1dba05f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising game hacks and generators. The primary lure appears to be a 'free generator / game hack' for Coin Master, directing users to the URL https://netcdn.xyz/app/406889139/sb-game-hacker-coin-master-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest malicious redirection and social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/sb-game-hacker-coin-master-game-hack In PDF document text
    • https://dr-willmer.de/images/minecraft-hacker-mask_GM479516143.pdfIn PDF document text
    • https://dr-willmer.de/images/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • https://dr-willmer.de/images/roblox-girl_GM431946152.pdfIn PDF document text
    • https://dr-willmer.de/images/robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://dr-willmer.de/images/minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • https://dr-willmer.de/images/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • https://dr-willmer.de/images/coin-master-free-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://dr-willmer.de/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://dr-willmer.de/images/coin-master-online_GM406889139.pdfIn PDF document text
    • https://dr-willmer.de/images/haktuts-coin-master-today_GM406889139.pdfIn PDF document text
    • https://dr-willmer.de/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://dr-willmer.de/images/microsoft-rewards-roblox_GM431946152.pdfIn PDF document text
    • https://dr-willmer.de/images/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • https://dr-willmer.de/images/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://dr-willmer.de/images/roblox-install-free_GM431946152.pdfIn PDF document text
    • https://dr-willmer.de/images/coin-master-free-spins-and-coins-app-download_GM406889139.pdfIn PDF document text
    • https://dr-willmer.de/images/coin-master-free-spins-and-coins-group_GM406889139.pdfIn PDF document text
    • https://dr-willmer.de/images/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • https://dr-willmer.de/images/minecraft-java-edition-free-download-for-android_GM479516143.pdfIn PDF document text
    • https://dr-willmer.de/images/how-to-get-java-minecraft-for-free_GM479516143.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_off00004b7f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B7F 23972 bytes
SHA-256: c2c9439d308f2359ad78107d6ffec322e4e98546ca17e942d36464a180f5de4c
font_01_sfnt_off0000820a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x820A 18136 bytes
SHA-256: c585062877f4224fcb1f1dfb3d6ea7b2a259284f2f9e680e0c2fd59b45efc3d5

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