Malicious PDF — malware analysis report

Static analysis result for SHA-256 caa1eda19f2a0fc7…

MALICIOUS

PDF

46.0 KB Created: 2021-06-03 08:41:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1a9625e9d9cb62a9182d9ca5dbc79338 SHA-1: 822ac020c4a5d951e45ba5e70292ebf9e663a632 SHA-256: caa1eda19f2a0fc76034fc5fbeb30c28dfdcb42313b1279bea0b2d2c1a395081
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a lure related to game hacks and free spins, directing users to a malicious URL. The ML classifier strongly flagged this PDF as malicious. The embedded URL is likely intended to download a second-stage payload or redirect the user to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9797

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-spin-today-game-hack PDF link annotation
    • http://digilib.iailm.ac.id/repository/pubg-uc-94fbr_GM1330123889.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/legit-coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-roblox-templates_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-hack-apk-ios-download_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-free-minecraft_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/no-human-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-game-packs-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/doctor-louie-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-time-hack-ios_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/roblox-sexually-abused_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-robux-generator-without-human-verification_GM431946152.pdfIn 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_off00004de3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DE3 24980 bytes
SHA-256: 873da4a4f8127a50c74a50bae4108dfd38d1144730784f26bde953ba18f53fa3
font_01_sfnt_off000086e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86E3 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off000090ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90CE 18240 bytes
SHA-256: a96ac7afd25cadbabafd1b9dbf0a180d0c1833ed2d07acb4363f122556c39d20

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