Malicious PDF — malware analysis report

Static analysis result for SHA-256 80a72bd55a6035dd…

MALICIOUS

PDF

50.5 KB Created: 2021-06-03 05:57:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 333f3d1b8860e2663551a4130984cb8e SHA-1: d3d756579e380ebf8b1d185f6cbcecbafeaff507 SHA-256: 80a72bd55a6035dd70d037cd5d17adabbb02bc2f672a8905be77732b698b9af0
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 0.9681

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.online/app/406889139/coin-master-free-redeem-code-game-hack PDF link annotation
    • http://rollipolli.hu/userfiles/files/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/100-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/coin-master-hack-spin_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/robuxglobalcom-no-verification_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/minecraft-pe-apk-download_GM479516143.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/coin-master-free-fire_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/roblox-microsoft-rewards_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/free-robux-script_GM431946152.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/master-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/coin-master-free-spinv1-0apkpure-com-apk_GM406889139.pdfIn PDF document text
    • http://rollipolli.hu/userfiles/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004cca.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CCA 24372 bytes
SHA-256: 99b8e2cf5b769662f62241009872380567eb0cd1bd07584e0a41b0caead70ba6
font_01_sfnt_off00008453.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8453 2896 bytes
SHA-256: c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd
font_02_sfnt_off00008e34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E34 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_03_sfnt_off0000a2bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2BF 18144 bytes
SHA-256: 5bbd7c38c96c77c4f9f35a136dd3471001d40e5cdd485746050297559c8b8e4d

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