Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f6d9aa1c2c46ef1…

MALICIOUS

PDF

44.6 KB Created: 2021-05-16 10:06:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e4366f90136daf14c88cec790c71e85b SHA-1: 9695091dd7bb388af771dfd3ab8fd3f3f716fdc1 SHA-256: 4f6d9aa1c2c46ef147eaf594acff00f6525cfe2e9859b0631576a8c36dddff73
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 0.9632

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/coin-master-free-spins-and-coins-daily-game-hack PDF link annotation
    • https://masseymotorcars.com/images/coin-master-free-spins-generator-no-verification_GM406889139.pdfIn PDF document text
    • https://masseymotorcars.com/images/free-robux-stream_GM431946152.pdfIn PDF document text
    • https://masseymotorcars.com/images/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://masseymotorcars.com/images/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://masseymotorcars.com/images/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://masseymotorcars.com/images/hack-coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • https://masseymotorcars.com/images/hack-coin-master-ios-download_GM406889139.pdfIn PDF document text
    • https://masseymotorcars.com/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://masseymotorcars.com/images/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • https://masseymotorcars.com/images/coin-master-hack-quora_GM406889139.pdfIn PDF document text
    • https://masseymotorcars.com/images/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • https://masseymotorcars.com/images/hack-coin-master-net_GM406889139.pdfIn PDF document text
    • https://masseymotorcars.com/images/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdfIn PDF document text
    • https://masseymotorcars.com/images/coin-master-free-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://masseymotorcars.com/images/how-to-hack-coin-master-with-root_GM406889139.pdfIn PDF document text
    • https://masseymotorcars.com/images/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • https://masseymotorcars.com/images/how-to-hack-coin-master-apkmody_GM406889139.pdfIn PDF document text
    • https://masseymotorcars.com/images/minecraft-tower-defense-2-hacked_GM479516143.pdfIn PDF document text
    • https://masseymotorcars.com/images/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://masseymotorcars.com/images/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048a1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48A1 24692 bytes
SHA-256: 34da06e0b7d93476a582c83f26bd1fbe08cc835bac4d85488727c05a877044b3
font_01_sfnt_off00008128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8128 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008ad9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AD9 18480 bytes
SHA-256: e9052e0f9c593188345ba389179451ef12c6c6a401d56a628cce0964dfd3917c

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