Malicious PDF — malware analysis report

Static analysis result for SHA-256 60c88bb6c42cbf57…

MALICIOUS

PDF

54.8 KB Created: 2021-05-14 14:31:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: fb67b445112120aa04affc61d12cb177 SHA-1: 77a7815d60074949a7b5462ad9c0e3f2f0fde39f SHA-256: 60c88bb6c42cbf57d7fa9890bccb5f20156a6578dc3f1f862b63d5ccfbec17c3
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 0.8324

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/406889139/50-free-spins-coin-master-links-game-hack PDF link annotation
    • http://inextpresident.com/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/picture-roblox_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
    • http://inextpresident.com/images/appsmob-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/coin-master-hack-progamers_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/rbx-claim_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/how-to-get-real-robux_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/archery-master-3d-coins-hack_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/game-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/real-robux-generator_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/free-coin-master-spins-and-coins-for-daily_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/free-minecraft-packs_GM479516143.pdfIn PDF document text
    • http://inextpresident.com/images/coin-master-free-gold-cards-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004aad.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AAD 26284 bytes
SHA-256: 03e2a084cde47a614169ce2b802727e6007e441af49948406528f60b23d46823
font_01_sfnt_off000086ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86EC 3088 bytes
SHA-256: e7854aff7cbc8fbdeb85d2b3d6248d12dc820ede8a581f4eac107fa6446c2222
font_02_sfnt_off000091b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91B7 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off0000a4dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4DC 18364 bytes
SHA-256: 5f18526dee368ac18b20cf023ba1ff49340788242d54a3837ea53eed50d07245
font_04_sfnt_off0000c72a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC72A 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

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