Malicious PDF — malware analysis report

Static analysis result for SHA-256 15cc475c036cd12d…

MALICIOUS

PDF

41.8 KB Created: 2021-05-17 19:04:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4cb2943370361c778b4ada71ab38b819 SHA-1: ae66842a94e13a4e858282c7762d29dd7537ce58 SHA-256: 15cc475c036cd12d1e1ad39a7f8debe060e66c83bd634cd25a661797675d5766
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure and an urgency-based lure. 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 6

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/roblox-free-hair-girl-game-hack PDF link annotation
    • http://reisebild.eu/images/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://reisebild.eu/images/is-roblox-free-on-nintendo-switch_GM431946152.pdfIn PDF document text
    • http://reisebild.eu/images/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdfIn PDF document text
    • http://reisebild.eu/images/earn-robux-online_GM431946152.pdfIn PDF document text
    • http://reisebild.eu/images/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://reisebild.eu/images/coin-master-free-items_GM406889139.pdfIn PDF document text
    • http://reisebild.eu/images/coin-master-mod-version-free-download_GM406889139.pdfIn PDF document text
    • http://reisebild.eu/images/give-free-robux_GM431946152.pdfIn PDF document text
    • http://reisebild.eu/images/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://reisebild.eu/images/coin-master-free-daily-spins-2021_GM406889139.pdfIn PDF document text
    • http://reisebild.eu/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://reisebild.eu/images/how-to-get-free-mods-in-minecraft_GM479516143.pdfIn PDF document text
    • http://reisebild.eu/images/free-roblox-glasses_GM431946152.pdfIn PDF document text
    • http://reisebild.eu/images/rbx-hut-promo-codes_GM431946152.pdfIn PDF document text
    • http://reisebild.eu/images/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://reisebild.eu/images/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://reisebild.eu/images/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://reisebild.eu/images/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://reisebild.eu/images/universal-minecraft-converter-free_GM479516143.pdfIn PDF document text
    • http://reisebild.eu/images/coin-master-bonus_GM406889139.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_003_off00004533.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4533 26680 bytes
SHA-256: ab74b8fe5c042fc932464a47faf7b94a7868b70b5b6b0f7cd4b65cb1a2665418
font_01_sfnt_off000080fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80FE 18296 bytes
SHA-256: 85bf76e8bd1c39b95a864efdae00349d5ffffd2e934a72b3fb989e9d72ccc849

Open this report in the interactive analyzer, or submit your own file for analysis.