Malicious PDF — malware analysis report

Static analysis result for SHA-256 8147180b911a5096…

MALICIOUS

PDF

34.6 KB Created: 2021-07-06 21:01:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 32eceba955eb7d0a3728eb6e33de5f99 SHA-1: aa08448e3c99c90813027a798d1a2ae4e39e719e SHA-256: 8147180b911a5096964f1b5c30e37bd3d4dc0aa5026529de1c8cb0f0c4e195a3
160 Risk Score

Malware Insights

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

This PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hack generators. The primary link, http://netcdn.tw/app/406889139/coin-master-hack-spins-game-download-game-hack, is identified as a malicious redirector. The document body and embedded URLs suggest a lure for users seeking cheats for popular games, likely leading to further malware downloads or phishing attempts. No scripts were extracted, but the embedded URLs and heuristic firings strongly indicate a malicious intent to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.tw/app/406889139/coin-master-hack-spins-game-download-game-hack In PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-hack-ios-reddit_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-hack-on-roblox-skyleree_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-adopt-me-hacks-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/hacks-for-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-jailbreak-speed-hack-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-pet-simolator-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-rhs-cash-in-roblox-high-school_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-hack-into-a-account-in-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/hacking-robux-for-money_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-hack-2021-without-verification_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/hackear-el-roblox-me-city-noma_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/cheat-code-roblox-gratuit_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/cm-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-roblox-sex-place_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-free-robux-code-april-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/where-can-i-get-free-coins-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
font_00_sfnt_off00002fd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FD5 22588 bytes
SHA-256: ac84778df9bbd4c3ac80b5238effb3f0959cf131fd7d0f10e12667842a573616
font_01_sfnt_off0000625f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x625F 19020 bytes
SHA-256: 090e8377c66a08f1b680c964e902ae24565e817195194959fe642e5370d74f2d

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