Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0b23b66188b7a67…

MALICIOUS

PDF

52.4 KB Created: 2021-06-09 04:20:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 97ddb753b06b0dd1d1099c8b473aaeb9 SHA-1: 40b3ac5f9949718f3471a963519c745046a1ca3f SHA-256: a0b23b66188b7a67d35ae25dbca6d331288123656ae613b6bbdc19a3e6325fa4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a high-severity heuristic firing for a game hack redirect lure, pointing to a specific URL. The document body also contains this URL, reinforcing the lure. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves tricking the user into visiting a URL that likely serves a malicious payload or leads to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9657

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.tw/app/431946152/roblox-hide-and-seek-cheats-game-hack PDF link annotation
    • https://perpus.upp.ac.id/digilib/repository/moonactive-free-spins_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/wurst-commands_GM479516143.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/deep-chills-run-free-roblox-id_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/is-tiktok-free_GM835599320.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/best-hacked-client_GM479516143.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/minecraft-client-download_GM479516143.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-roblox-gear_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/how-to-get-free-spins-grom-coin-master_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-mod-apk-coin-master_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/roblox-exploit-download-2021-free_GM431946152.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_off00005385.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5385 27188 bytes
SHA-256: c7cf6f4eff1571f979168d0291c4c63d0b8087408518f1379773c9774ffd0684
font_01_sfnt_off0000916d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x916D 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00009b52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B52 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_03_sfnt_off0000a863.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA863 18748 bytes
SHA-256: 4c658f332b5345ab76f75c8751c7deb505341de9caf66ad2a21f400a2f3c17de

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