Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd27de4d42a6acf1…

MALICIOUS

PDF

42.3 KB Created: 2021-05-11 16:43:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4973d2dc74a1a8283325fe6bcf6fbb93 SHA-1: 220f849f8f3c9adbfe4766e1c0ee99a6594fa1b6 SHA-256: cd27de4d42a6acf10844fc4053f6c81ea1d215d024b00ed8550205b8f015112d
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 0.9971

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/431946152/freerobuxhack-us-2021-game-hack PDF link annotation
    • http://apostolosandreaslemesou.com/images/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-hack-no-verification-no-signup_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-hack-ios-reddit_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-minecraft-account-and-password-generator_GM479516143.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/i-didnt-get-my-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/114-4-hacks_GM479516143.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-hack-unlimited-spins-and-coins-cheats_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/hack-coin-master-game-apk_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/how-to-get-free-robux-promo-codes_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_003_off00004734.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4734 24932 bytes
SHA-256: d4c5cd0a1216963801b825cb317ee0bb1aba29923ffbf4ab8e4a046afd4183f0
font_01_sfnt_off00008059.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8059 19168 bytes
SHA-256: efb3faf8613e574aaafbc2c03eecac9d279c27a31d34e4d9725215b9c75db868

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