Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1886b75cfda117f…

MALICIOUS

PDF

49.2 KB Created: 2021-05-12 01:01:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: ae32e1ae2f1a06e48f02fe4f6857efdc SHA-1: 68d96391aef9d6e244e85880efca50b0ac836e88 SHA-256: d1886b75cfda117f6b3548cb2b9b4564cde4b2a3f5fc6546107ca44f35afcc47
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8642

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-name-tag-hacks-game-hack PDF link annotation
    • http://roberto-gac.org/images/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://roberto-gac.org/images/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://roberto-gac.org/images/free-robux-clothes_GM431946152.pdfIn PDF document text
    • http://roberto-gac.org/images/free-game-pack-coin-master_GM406889139.pdfIn PDF document text
    • http://roberto-gac.org/images/coin-master-app-free-download_GM406889139.pdfIn PDF document text
    • http://roberto-gac.org/images/minecraft-bedrock-free-download_GM479516143.pdfIn PDF document text
    • http://roberto-gac.org/images/www-coinmaster_GM406889139.pdfIn PDF document text
    • http://roberto-gac.org/images/coin-master-apk_GM406889139.pdfIn PDF document text
    • http://roberto-gac.org/images/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://roberto-gac.org/images/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://roberto-gac.org/images/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://roberto-gac.org/images/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://roberto-gac.org/images/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://roberto-gac.org/images/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://roberto-gac.org/images/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://roberto-gac.org/images/coin-master-hack-ios-12_GM406889139.pdfIn PDF document text
    • http://roberto-gac.org/images/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://roberto-gac.org/images/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • http://roberto-gac.org/images/wurst-115_GM479516143.pdfIn PDF document text
    • http://roberto-gac.org/images/coin-master-free-gold-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049ab.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49AB 28928 bytes
SHA-256: 1c9789f95bacbc512f9e7ee15089eb790dd1b22b5f1bcd66311e2a6acd9358c2
font_01_sfnt_off000089ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89AB 3020 bytes
SHA-256: f1a29adcea636583330be8db4f6466410de551ac48576b9e1aa5c34e2d665a1f
font_02_sfnt_off00009400.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9400 2816 bytes
SHA-256: 4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f
font_03_sfnt_off00009e11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E11 18288 bytes
SHA-256: eb7ed4260d6d64c3cd9f3242d6af3157cea31df7eff6e4be90ec8e6c005c47d1

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