Malicious PDF — malware analysis report

Static analysis result for SHA-256 804c6ceecac7f64e…

MALICIOUS

PDF

42.6 KB Created: 2021-05-17 02:49:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 19b8620eb9f19a6853a907d4e17fb4e8 SHA-1: 225214be69005ee857f02eabb1b943e638cd91a0 SHA-256: 804c6ceecac7f64e92411e9bbd33285ee6ba4f2344520bae394925fa4c272ab8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' lure. The embedded URL, https://netcdn.xyz/app/431946152/oprewards-com-earn-game-hack, likely serves as a redirector to a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a social engineering tactic to trick users into visiting a potentially harmful resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/431946152/oprewards-com-earn-game-hack PDF link annotation
    • https://cluster-consulting.com/images/coin-master-spins-free-2021_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/picture-roblox_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-hack-apk-35-8_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-roblox-avatar_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-spins-and-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-robux-now_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • https://cluster-consulting.com/images/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • https://cluster-consulting.com/images/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/how-to-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-hacks-for-android_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/cm-spin-link_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/how-to-duplicate-coin-master-spin-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_off00004b7f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B7F 24576 bytes
SHA-256: 3d5120e1b918bc1ce00645ca4988f62de145161701dc59d35fc1de961177c826
font_01_sfnt_off000083f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83F2 18344 bytes
SHA-256: 4ebadb41269d4d53a149b3f737cb33750c79454e6afcf27c4e79d6db23fa6b8f

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