Malicious PDF — malware analysis report

Static analysis result for SHA-256 db7156946744a70b…

MALICIOUS

PDF

34.9 KB Created: 2021-07-05 18:43:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3cb3bd0a4f924670231083582132179b SHA-1: 8d080c91e0c11cf28b650d6487fb5676bbb2d227 SHA-256: db7156946744a70b507a01463163abcce6318a69517dccfffe1ccbe3fe496cce
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and embedded text promoting game hacks and generators, specifically directing users to 'http://netcdn.tw/app/406889139/coin-master-hack-without-verification-game-hack'. Heuristics indicate this URL is a known malicious redirector, and the overall ML classification strongly suggests malicious intent. The document's content and structure are designed to trick users into visiting this malicious link, likely as a lure for further exploitation or malware delivery.

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-without-verification-game-hack In PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-to-get-a-free-hat-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/ming-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/noclip-roblox-hack_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/play-minecraft-free-online-no-download_GM479516143.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/gear-hack-roblox-building_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/roblox-free-purple-hat_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/roblox-hack-build-your-own-boat_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/roblox-intro-maker-free_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/roblox-win-earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/roblox-robux-hack-no-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/roblox-jailbreak-2021-hack_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/robux-hack-tools_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/how-to-report-hacking-on-roblox_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/hacker-skin-roblox_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/roblox-free-robux-2021-hack_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://learning.mtsn3kotabekasi.sch.id/__statics/gudangsoal/files/christmas-tycoon-roblox-hack-script_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_off0000333d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x333D 22252 bytes
SHA-256: edcb27b67d26093ba18391e094110e3e7f43ee1ea7781b00e58a2e4cb93e783e
font_01_sfnt_off000064b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B4 18640 bytes
SHA-256: e70c731676407bb7de6fff885d091169cd44aed03cdfcdb15904209bbd23907c

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