Malicious PDF — malware analysis report

Static analysis result for SHA-256 0da5c4bbbd5383ce…

MALICIOUS

PDF

35.9 KB Created: 2021-06-27 21:07:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0a32c68fe6518a10b78410331ffa0d73 SHA-1: d2d7453516e78d81db75754e35bb5618ca112672 SHA-256: 0da5c4bbbd5383ce7f6a1617a7684ede01029b0059f1d4bb5083e81f00a6ffff
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 0.9980

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/how-to-join-free-buldiers-club-roblox-game-hack PDF link annotation
    • http://pustaka.manajemen.fekon.unand.ac.id/repository/roblox-after-effects-download-free_GM431946152.pdfIn PDF document text
    • http://pustaka.manajemen.fekon.unand.ac.id/repository/free-roblox-pants-just-transpent_GM431946152.pdfIn PDF document text
    • http://pustaka.manajemen.fekon.unand.ac.id/repository/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://pustaka.manajemen.fekon.unand.ac.id/repository/how-to-labeled-cheater-in-roblox-parkour_GM431946152.pdfIn PDF document text
    • http://pustaka.manajemen.fekon.unand.ac.id/repository/how-to-download-nonsense-diamond-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.manajemen.fekon.unand.ac.id/repository/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.manajemen.fekon.unand.ac.id/repository/cheats-for-sprinting-simulator-2-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.manajemen.fekon.unand.ac.id/repository/free-tiktok-followers-no-verification-or-survey_GM835599320.pdfIn PDF document text
    • http://pustaka.manajemen.fekon.unand.ac.id/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://pustaka.manajemen.fekon.unand.ac.id/repository/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://pustaka.manajemen.fekon.unand.ac.id/repository/free-robux-giveaway-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.manajemen.fekon.unand.ac.id/repository/how-to-get-free-robux-2021-no-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.manajemen.fekon.unand.ac.id/repository/roblox-spongebob-shirt-free_GM431946152.pdfIn PDF document text
    • http://pustaka.manajemen.fekon.unand.ac.id/repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://pustaka.manajemen.fekon.unand.ac.id/repository/i-caught-my-mom-cheating-in-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.manajemen.fekon.unand.ac.id/repository/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.manajemen.fekon.unand.ac.id/repository/roblox-glitches-and-cheats-for-lumber-tycoon_GM431946152.pdfIn PDF document text
    • http://pustaka.manajemen.fekon.unand.ac.id/repository/bugmenot-roblox-2021-free_GM431946152.pdfIn PDF document text
    • http://pustaka.manajemen.fekon.unand.ac.id/repository/how-do-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.manajemen.fekon.unand.ac.id/repository/roblox-free-builders-club-2021-android_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_002_off0000336f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x336F 22716 bytes
SHA-256: 7f2b10369e2b23bc62ac33f329472f08ef5e28eb778be6ff5d503e5c54ad038a
font_01_sfnt_off0000662f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x662F 19412 bytes
SHA-256: 70c6096a63a05726da56da3e769a9d03c7ecbee59f2b932a7693835cac2b23fb

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