Malicious PDF — malware analysis report

Static analysis result for SHA-256 94d76b758f7ec072…

MALICIOUS

PDF

48.0 KB Created: 2021-06-03 08:13:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 1b72b34c7b006cb4de976421e0879564 SHA-1: 36c61f33fbbc82f8a1b9804b0e0d268d9acc1a42 SHA-256: 94d76b758f7ec072fcfac2a0d13edddec321e3bdaf925dbd98e4897d5069a395
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 0.9796

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/431946152/rbx-free-robux-game-hack PDF link annotation
    • http://lib.akpnbahtera.ac.id/repository/coin-master-free-spins-iphone_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/minecraft-login-free_GM479516143.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/getrobux-come_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/village-coin_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-free-spins-for-iphone_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-free-100-spin_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-robux-download_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://krnl.rocksIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005250.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5250 26516 bytes
SHA-256: 36b920732e8beed70296becd3814ac0d1f21009b5ac4841526fe8f0898d235fc
font_01_sfnt_off00008d03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D03 3884 bytes
SHA-256: 64ea6bfd232c3abde76d8b86727203bfa3f935a5783cd0c1f642cf6d3fb42b29
font_02_sfnt_off000099ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99AB 18012 bytes
SHA-256: 03f7603bc8a5695bbd0c39958af3fcfd5a932cbc13eba7563a8e8ca8b5ca4208

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