Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4abdebabe839c74…

MALICIOUS

PDF

34.6 KB Created: 2021-07-06 14:30:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: dd26a47c419d60702d15d83c2577cfce SHA-1: 0512b51b64b5194ad3648a7a4e23717511cbabed SHA-256: e4abdebabe839c745cdf57c79551b63ba4ac297891eeb9ce805d0fbf3a200f1d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs that are disguised as game hacks or generators for popular mobile games like Coin Master and Roblox. The primary URL, http://netcdn.tw/app/406889139/coin-master-free-coins-and-spins-group-game-hack, is flagged as a lure for game hacks. The document's structure and content strongly suggest a phishing or social engineering attempt to redirect users to potentially malicious sites. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-free-coins-and-spins-group-game-hack PDF link annotation
    • http://pustaka.bbppketindan.info//repository/mcpe-master-hack-unlimited-coins-download_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-spins-link-deutsch-ios_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-ftw_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/on-roblox-how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-hack-in-roblox-dungeon-quest_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-svg-free_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-fire_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-roblox-card-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/robux-converter_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-hack-apk-download-for-android-mobile_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-hack-coins-in-archery-master-3d_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/daily-free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-spin-app-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/roblox-2021-hack_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
stream_002_off00003047.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3047 22988 bytes
SHA-256: d15789a670ce9f14e1a139639b300708f7a9fa1453b076883af154883c01567d
font_01_sfnt_off00006412.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6412 18488 bytes
SHA-256: fb59b1f5ad3b1d78d5ae9c71c2b2cb39d8a8a8878e6ccc76b5c7eaa0d92d8094

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