Malicious PDF — malware analysis report

Static analysis result for SHA-256 f96f78bbc12fe38d…

MALICIOUS

PDF

42.6 KB Created: 2021-05-12 06:16:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 24049cc692d8b5ec6bfb62fbe8f5bf12 SHA-1: 3b7ad9f7f373627740ce44d8f5625c2fa5e9fff0 SHA-256: f96f78bbc12fe38dca9efd7d89be951b43212bf34b5615f6b8fd8e559d3461cc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks, specifically linking to a URL that appears to be a generator or hack site. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a malicious resource, likely for malware download or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/479516143/minecraft-fly-hack-game-hack PDF link annotation
    • https://tpp.com.tw/image/data/files/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/free-robux-script_GM431946152.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/village-4-coin-master_GM406889139.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/minecraft-ps4-code-free_GM479516143.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/free-robux-scams_GM431946152.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/free-robux-rewards_GM431946152.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://tpp.com.tw/image/data/files/coin-master-download-hack-ios_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
stream_003_off00004ab2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AB2 25528 bytes
SHA-256: 7ab7c6da59794b4891d0085d7a9a513473c9d179f3522f47a4ff3ad62b91d1d4
font_01_sfnt_off0000855a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x855A 17992 bytes
SHA-256: 06651707645ad1f4ebda8b3f746ca430a0b9618d46277a77061ba05985c34688

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