Malicious PDF — malware analysis report

Static analysis result for SHA-256 71110f6b1516695a…

MALICIOUS

PDF

44.7 KB Created: 2021-06-03 12:05:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 87235dc33437c256e18b8a9905196c0c SHA-1: 52a0c1373c694ea8621d9dda75da2cf5eb08abb8 SHA-256: 71110f6b1516695a44c55eb2a5b4ada02dbec302a529b1b0101d6fffc87bb6ad
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 0.9865

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/cheats-for-coin-master-game-hack PDF link annotation
    • http://perpus.polimarim.online/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-get-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/rbx-free_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/spin-coin_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-free-spin-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-tiktok-and-like_GM835599320.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-apk_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/is-it-possible-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/robux-codes_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-robux-no-password_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-online-hack-link_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-tiradas-gratis_GM406889139.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_004_off000051a9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51A9 26172 bytes
SHA-256: 3f6da5415c120e34f27ef0c4eb4884a49dbd318fb6b635a687b915cfce878e03
font_01_sfnt_off00008da1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA1 17876 bytes
SHA-256: 503fe8d746beae52c5eef18798c5d93272f0ad11156ff4c57f17f4a0b53681c9