Malicious PDF — malware analysis report

Static analysis result for SHA-256 51bb393271968108…

MALICIOUS

PDF

39.7 KB Created: 2021-05-10 18:03:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d49ea35460c62b90d8d9b8889b1189cc SHA-1: d980998c26a88f411a2aa83f7e36cd77333c6865 SHA-256: 51bb39327196810861ffbbc4d058db66942412d74e28739fa745c23017f9e874
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document is designed to lure users into clicking links that lead to malicious websites, masquerading as game hacks or free generators. The primary malicious URL identified is https://netcdn.xyz/app/479516143/worst-client-game-hack. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to exploit users through social engineering, likely leading to further malware downloads or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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.xyz/app/479516143/worst-client-game-hack PDF link annotation
    • https://hassel-event.de/images/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://hassel-event.de/images/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://hassel-event.de/images/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • https://hassel-event.de/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://hassel-event.de/images/coin-master-for-pc-free-download_GM406889139.pdfIn PDF document text
    • https://hassel-event.de/images/how-to-download-minecraft-for-free-on-windows_GM479516143.pdfIn PDF document text
    • https://hassel-event.de/images/coin-master-free-spins-usa-2021_GM406889139.pdfIn PDF document text
    • https://hassel-event.de/images/roblox-toy-codes-free_GM431946152.pdfIn PDF document text
    • https://hassel-event.de/images/how-do-you-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • https://hassel-event.de/images/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • https://hassel-event.de/images/descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • https://hassel-event.de/images/coin-master-32-android-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://hassel-event.de/images/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • https://hassel-event.de/images/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • https://hassel-event.de/images/free-cheat-codes-for-coin-master_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_off000043ac.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x43AC 24300 bytes
SHA-256: 2a08ef30f56ef38d94b2ee62042d54dec90c7691cf0b172dde29950f9fc69dbe
font_01_sfnt_off00007aee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AEE 17752 bytes
SHA-256: c4c464576242dc15d115a20e89f4ad7b5703edf25fae76549fb4d98dda0b80b5