Malicious PDF — malware analysis report

Static analysis result for SHA-256 16ba96cf156ea523…

MALICIOUS

PDF

45.1 KB Created: 2021-05-13 06:53:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a571adbe43082a4a53b17e9019c8761c SHA-1: 0d145aefb39613aa084b8f45b7d31698a67154ba SHA-256: 16ba96cf156ea523266df09c491fa00e7a0c7eaffa01c5a42797ae7e3661344e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, including a known malicious redirector. The document body and heuristics suggest a lure for game hacks or cheats, aiming to trick users into downloading potentially malicious files. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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/download-hack-coin-master-game-hack In PDF document text
    • https://www.shin.ge/images/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • https://www.shin.ge/images/how-to-get-free-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.shin.ge/images/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdfIn PDF document text
    • https://www.shin.ge/images/free-roblox-groups-with-funds_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/give-me-robux-now_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/roblox-sexually-abused_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/how-to-get-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/minecraft-clipart-free_GM479516143.pdfIn PDF document text
    • https://www.shin.ge/images/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • https://www.shin.ge/images/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://www.shin.ge/images/coin-master-card-collection-link_GM406889139.pdfIn PDF document text
    • https://www.shin.ge/images/hack-coin-master-for-iphone_GM406889139.pdfIn PDF document text
    • https://www.shin.ge/images/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://www.shin.ge/images/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.shin.ge/images/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://www.shin.ge/images/coin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • https://www.shin.ge/images/free-coins-coin-master-link_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_off00004827.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4827 26084 bytes
SHA-256: a9bb1f82e0e35ccd952e7f7c463d885da2504832e2bbaa0dde7c492699a539e4
font_01_sfnt_off000083d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83D4 2896 bytes
SHA-256: c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd
font_02_sfnt_off00008dba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DBA 18296 bytes
SHA-256: 014eb3bb80a3687b4d2f2309fc9b410fcca0ecdce13dd0dc67b7e2f0e819dc99

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