Malicious PDF — malware analysis report

Static analysis result for SHA-256 175c19e0e9049cb8…

MALICIOUS

PDF

35.4 KB Created: 2021-07-20 20:16:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 55eef61ab7fd429c29d536619e105560 SHA-1: 80dc0fb8147dfc34e8af7254a6e56b075efaac70 SHA-256: 175c19e0e9049cb872baef02a462b18fb488418b00e86b4c9daae0a8da9aba51
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to 'netcdn.tw' which is flagged as a game hack redirector. The document body also contains text related to 'Coin Master Free Spins' and a call to action to access a generator. This suggests a social engineering lure to trick users into visiting potentially malicious sites or downloading further malware. No scripts were extracted, but the presence of embedded URLs and the lure indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9962

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-spins-link-blogspot-2021-game-hack PDF link annotation
    • https://depilhome-fr.fr/images/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://depilhome-fr.fr/images/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • https://depilhome-fr.fr/images/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • https://depilhome-fr.fr/images/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • https://depilhome-fr.fr/images/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • https://depilhome-fr.fr/images/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://depilhome-fr.fr/images/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://depilhome-fr.fr/images/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • https://depilhome-fr.fr/images/tiktok-fans-free_GM835599320.pdfIn PDF document text
    • https://depilhome-fr.fr/images/hacks-roblox_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_off000030d8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30D8 23644 bytes
SHA-256: 8ecbcbe950945354b520b94c1e09b2b94c419d144c8f0587bede563483c860fc
font_01_sfnt_off00006636.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6636 19036 bytes
SHA-256: a1db0e26d638f2546736f1f7b434dee98a1c5e726f40723477b7c203db66759e

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