Malicious PDF — malware analysis report

Static analysis result for SHA-256 d92d5f2434b8aeb4…

MALICIOUS

PDF

44.9 KB Created: 2021-06-10 18:01:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5a0df3a1fef30aa1ad3a54215453d7be SHA-1: cce03689909100901738e9f6d05453c4ee27b870 SHA-256: d92d5f2434b8aeb4fb5df38363fa03e51356c5f57e83921fbfe9ecb49aad5502
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are designed as lures for game hacks and free items, such as for Roblox and Coin Master. The primary link, 'https://netcdn.tw/app/431946152/roblox-card-free-fake-it-game-hack', strongly suggests a malicious intent to redirect users to potentially harmful content. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a social engineering tactic to trick users into downloading further malicious payloads or visiting phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.tw/app/431946152/roblox-card-free-fake-it-game-hack PDF link annotation
    • http://babbibooth.com/images/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://babbibooth.com/images/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • http://babbibooth.com/images/free-tiktok-fans-and-likes_GM835599320.pdfIn PDF document text
    • http://babbibooth.com/images/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://babbibooth.com/images/freespinandcoin-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://babbibooth.com/images/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://babbibooth.com/images/free-robux-on-roblox-without-human-verification_GM431946152.pdfIn PDF document text
    • http://babbibooth.com/images/wurst-client-download_GM479516143.pdfIn PDF document text
    • http://babbibooth.com/images/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://babbibooth.com/images/roblox-treasure-hunt-simulator-hack-script_GM431946152.pdfIn PDF document text
    • http://babbibooth.com/images/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • http://babbibooth.com/images/master-8-ball-pool-free-coins_GM406889139.pdfIn PDF document text
    • http://babbibooth.com/images/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://babbibooth.com/images/roblox-how-to-get-any-gamepass-free_GM431946152.pdfIn PDF document text
    • http://babbibooth.com/images/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://babbibooth.com/images/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://babbibooth.com/images/free-robux-come_GM431946152.pdfIn PDF document text
    • http://babbibooth.com/images/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://babbibooth.com/images/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://babbibooth.com/images/free-roblox-templates_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_004_off000050c0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50C0 25756 bytes
SHA-256: daf030c3c1ff922795405dade6e9dd4b2fe29b8a2dcc4bd2b29eb623de8070b1
font_01_sfnt_off00008bf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BF0 18624 bytes
SHA-256: 6b416c61aa6168ad6018f772e657ad15f3c3f833d820fd1381077c034802930a

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