Malicious PDF — malware analysis report

Static analysis result for SHA-256 68b4e3d5d87c8432…

MALICIOUS

PDF

33.4 KB Created: 2021-06-19 16:35:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c33d486b94578cefd6b68ccb09de918e SHA-1: 6f1585f281668b8c7ce4384fe37177e088284449 SHA-256: 68b4e3d5d87c843244a5c591bae4a870f5f408f5906a831d82b50836e423f4b1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to known malicious redirectors, disguised as 'free generator' or 'game hack' lures. The document body and extracted URLs strongly suggest a phishing or scam attempt to trick users into visiting malicious sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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-robux-hack-penguinson-game-hack In PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/how-to-jump-high-in-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/get-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/real-roblox_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/tiktok-likes-free_GM835599320.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-tiktok-likes-app_GM835599320.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/coin-master-daily-rewards-link_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/coin-master-hack-without-verification-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-robux-for-free_GM431946152.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
font_00_sfnt_off00002b0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B0C 22648 bytes
SHA-256: a658fb1a54822ac8de5f5e2495857291aed8ad84c5d287c7b411a5b311cfd29a
font_01_sfnt_off00005d92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D92 19236 bytes
SHA-256: 6c9ebe701eb74bb74ae0e937c287d5ce483b26bd84f3a05a382ce9d03f999829

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