Malicious PDF — malware analysis report

Static analysis result for SHA-256 387e8b6992bded83…

MALICIOUS

PDF

34.0 KB Created: 2021-07-04 11:16:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 54627b51f12e794fe976f8fe141392f7 SHA-1: ca9d6e3c3799dd042d5c104b517776a9697131ee SHA-256: 387e8b6992bded836ed098ba5185d59d8e92ee6f187f3056d257b04b9da58f51
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 0.9980

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/get-free-cards-in-coin-master-game-hack PDF link annotation
    • http://rollipolli.hu/userfiles/files/free-stuf-in-robux-calgot_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/hack-gratui-pour-avoir-toute-les-gamepass-de-roblox-gratuite_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/roblox-pc-hack-download_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/free-esp-aimbot-roblox_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/how-to-get-free-roblox-bucks_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/coin-master-gold-cards-hack-english_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/how-to-do-the-walk-through-walls-hack-in-roblox_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/bubbly-animation-roblox-free_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/prison-life-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/sandbox-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/roblox-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/check-cashed-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/how-to-get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/roblox-stucid-fly-hack_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/how-to-hack-roblox-june-2021_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/earn-points-for-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002e95.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E95 23024 bytes
SHA-256: eca37485161960f5418fc7fc5404977c54640b4fe6530adb5d4410e49e2bf4f2
font_01_sfnt_off0000626e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626E 18172 bytes
SHA-256: 1d66101b06ab2c0b8923d212be95a25ed94b633012536eb44497e3dacd320723

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