Malicious PDF — malware analysis report

Static analysis result for SHA-256 51fd7e94579a8e6d…

MALICIOUS

PDF

36.1 KB Created: 2021-07-03 12:24:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f84bfe4c7c8a96ec87cb6b7995bf88f0 SHA-1: be259c049360f603806ece836e38df06871325e9 SHA-256: 51fd7e94579a8e6d0ff4283bc670f9dd1ff7d5a8cb250f222eb3a36375c8f55a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of offering game hacks and generators to entice users. The primary URL, http://netcdn.tw/app/406889139/2021-no-human-verification-hack-for-coin-master-game-hack, is directly linked to this lure and is highly suspicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to redirect users to potentially malicious websites for further exploitation or phishing.

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/406889139/2021-no-human-verification-hack-for-coin-master-game-hack PDF link annotation
    • https://slims.bakrie.ac.id/textbook/repository/earn-points-for-robux_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/codes-roblox-free-items_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/roblox-how-to-get-a-non-free-model_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/room-cheats-roblox_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-get-free-robux-on-ipad-roblox_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-get-robux-for-free-without-human-verication_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-robux-codes-on-android-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-executors-for-roblox_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/synapse-x-roblox-free-download-2021_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/gamepass-hack-roblox_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-robux-codes-november-2021_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-real-hack_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_off00003483.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3483 23076 bytes
SHA-256: a90d93bef358ad02b10277cfce86c6019b1933624d3f49cbd8f99a1f36a368bf
font_01_sfnt_off00006843.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6843 19104 bytes
SHA-256: b99d8ce9978a67e1c1797b589c5e57fcc0f76920f06468f0d8e602f7f6af843c

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