Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ac4c95e162e044a…

MALICIOUS

PDF

45.9 KB Created: 2021-06-03 12:42:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 6110262f3ecd88926e82eec841da9109 SHA-1: 7d669768fc1c6d2db2dfe80ae28384ffbebf5510 SHA-256: 9ac4c95e162e044af426ebe5228aed774efc567ef514be74fda69689041330b0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free Robux, directing users to a malicious URL. The presence of embedded URLs and the ML classifier strongly indicate malicious intent. The document likely serves as a phishing lure to redirect users to a site that may host further malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/how-to-get-free-robux-no-survey-game-hack PDF link annotation
    • https://digilib.darmajaya.ac.id/repository/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/give-me-robux-now_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/coin-master-hack-android-no-root_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/roblox-birthday-invitations-free-printable_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/coin-master-free-spins-twitter_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/minecraft-the-complete-handbook-collection_GM479516143.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/https-iosgodscom-topic-20218flipmastercoinshack_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/free-spin-sites-for-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/coin-master-hacks-free-spins_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_off0000547c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x547C 25928 bytes
SHA-256: 90f0485eaf753436b1116e6a518cb83c0200a1e67db4d9e1adbf01a73c4f9796
font_01_sfnt_off00008fc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FC3 18576 bytes
SHA-256: 4e9b11cd56806b44a111e59337afa2364f0ba527e2b4797dd95234ca7f902292

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