Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed9c38b2ee0f2bd8…

MALICIOUS

PDF

43.3 KB Created: 2021-05-16 11:10:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f2282a61430437c892bf8b2d84fcb388 SHA-1: 109d4f8fc5ee4f277334db9e31db004ba6320502 SHA-256: ed9c38b2ee0f2bd88b7626d72ad51a48d338001859af39f0fcd452449b74cb80
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses 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 0.9969

Heuristics 5

  • 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.
  • 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-hack-apk-game-hack PDF link annotation
    • https://www.hotel-forsthaus.com/images/free-dominus-roblox_GM431946152.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/coin-master-free-gift-cards_GM406889139.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/coin-master-hack-apk-app_GM406889139.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/minecraft-pocket-edition-free-apk_GM479516143.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/coin-master-spin-rewards_GM406889139.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/jailbreak-script_GM431946152.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/coin-master-free-coins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/coin-master-hack-mod-apk-download_GM406889139.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/robux-today_GM431946152.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/coin-master-hack-without-verification-ios_GM406889139.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/minecraft-wurst-client_GM479516143.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_off0000483c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x483C 26820 bytes
SHA-256: 48db84cf5c38419f60a3ef0a1acc509984b940837e843d9fb82ce1a1b8be5ee5
font_01_sfnt_off00008673.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8673 18356 bytes
SHA-256: 7cdc4109e76722f5b523df4cd1b295e2212ddbe91aca110ba626f8c95e058f26

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