Malicious PDF — malware analysis report

Static analysis result for SHA-256 0780bdc954058a48…

MALICIOUS

PDF

34.3 KB Created: 2021-07-03 21:27:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 3ff16519ec2a9ddeeaf142b2f2396adc SHA-1: 1951cc1a08b38d03a4b8017e4537bba40361a090 SHA-256: 0780bdc954058a488cfa0d8ab70f09235d2d757f8c6931665afdfa47b32135d2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a game hack redirector, specifically targeting users with lures for 'Coin Master' and 'Minecraft'. The embedded URL http://netcdn.tw/app/406889139/8bp-hack-coin-master-game-hack is the primary indicator of malicious intent, likely serving as a gateway to a malicious payload or phishing site. No scripts were extracted, but the document's structure and linked URLs strongly suggest a social engineering attack to trick users into downloading malware or visiting a compromised site.

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/406889139/8bp-hack-coin-master-game-hack PDF link annotation
    • http://library.unissula.ac.id/fe/repository/coin-master-game-free_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/minecraft-hack-ios_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/best-free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-cheat-com_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/hack-de-roblox-traspasar-paredes-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/hack-game-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/wurst-112-2_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-get-free-spins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-working-hack_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/public-enemy-sun-prairie-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/minecraft-java-free-download_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-executors-for-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/tap-this-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/minecraft-pe-apk-download_GM479516143.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_off00003006.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3006 22488 bytes
SHA-256: 12ac41911c11755215863590bb4f74ba1ab4186a46eb00680c4bc1617816572a
font_01_sfnt_off0000626d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626D 18608 bytes
SHA-256: da0de437939d63f44f987bec0618296c90a522a78b3762aa99895062e4904f36

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