Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a89f074256aa97b…

MALICIOUS

PDF

34.6 KB Created: 2021-06-29 15:55:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: a374cd18422572b77382cba061a7036c SHA-1: 25314316cc68087630cfeb2f9fc5bedc90ece5c5 SHA-256: 0a89f074256aa97b1bcce1ee9e1ad05f59bad43476e12e76f89a0e0e77801deb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure, advertising 'free Robux' or game hacks to entice users to click on embedded links. The primary link, http://netcdn.co/app/431946152/hacking-robux-for-free-game-hack, is highly suspicious and likely serves as a redirector to a malicious payload. While no scripts were explicitly extracted, the PDF structure and heuristics indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/hacking-robux-for-free-game-hack PDF link annotation
    • http://slims.abulyatama.ac.id/repository/roblox-free-robux-generator-bc-only_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-green-bird-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/minecraft-apk-114_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/cheat-codes-for-roblox-android_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/minecraft-java-account-free_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/what-are-points-for-in-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-roblox-group-with-funds-generator_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-roblox-usernames-and-passwords-with-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-marshmellow-head-on-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-free-spins-fb_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/how-do-i-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-robux-by-joining-a-group_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-hack-2021-without-human-verification_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
font_00_sfnt_off000031ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31EE 22064 bytes
SHA-256: 03a709a0cabdfc59c7c8c4b8a1f3ebbeaf641b3ce3eb7a5123f770e85a2546e6
font_01_sfnt_off0000627d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x627D 19008 bytes
SHA-256: 71174e35cc65db64270471f4cd1212172f3c23ee062e4a21264317bf999dda31

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