Malicious PDF — malware analysis report

Static analysis result for SHA-256 c023fd05fa1fe2b4…

MALICIOUS

PDF

44.6 KB Created: 2021-05-14 22:57:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7717877f71b32dd256b8c7a868de171c SHA-1: dbdbc6385815615fe70f1d97c246d8a2f691c113 SHA-256: c023fd05fa1fe2b446b8ffd3526aa7949dd07824d86da59daeb283794b1c6a9f
160 Risk Score

Malware Insights

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

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or generators. The ML classifier also flagged this PDF as malicious. The embedded links are designed to lure users into clicking, likely leading to further compromise or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/479516143/how-to-get-java-minecraft-free-game-hack In PDF document text
    • http://danielkleiboemer.de/images/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://danielkleiboemer.de/images/minecraft-apk-114_GM479516143.pdfIn PDF document text
    • http://danielkleiboemer.de/images/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://danielkleiboemer.de/images/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://danielkleiboemer.de/images/my-minecraft-account-was-hacked_GM479516143.pdfIn PDF document text
    • http://danielkleiboemer.de/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://danielkleiboemer.de/images/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • http://danielkleiboemer.de/images/instagram-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://danielkleiboemer.de/images/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • http://danielkleiboemer.de/images/coin-master-hack-fast-org_GM406889139.pdfIn PDF document text
    • http://danielkleiboemer.de/images/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://danielkleiboemer.de/images/coin-master-free-spins-and-cards_GM406889139.pdfIn PDF document text
    • http://danielkleiboemer.de/images/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://danielkleiboemer.de/images/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://danielkleiboemer.de/images/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://danielkleiboemer.de/images/free-robux-download_GM431946152.pdfIn PDF document text
    • http://danielkleiboemer.de/images/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://danielkleiboemer.de/images/roblox-tracker_GM431946152.pdfIn PDF document text
    • http://danielkleiboemer.de/images/coin-master-hack-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • http://danielkleiboemer.de/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049c8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49C8 24824 bytes
SHA-256: bf40d85db1d9687a0c6dc96e25f85523d12169e93ff085024c03ed7975022c88
font_01_sfnt_off000081f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81F7 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off00008c07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C07 18152 bytes
SHA-256: b07ca7cfd9f4df49e8124e55bb29c456f703fc5bdce85e2b26b96107911b04a3

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