Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8dd5990a610303…

MALICIOUS

PDF

36.1 KB Created: 2021-07-08 00:25:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ed28a27702807ecc7be5dbafe77e727a SHA-1: 9024c9fce511a8771d0f755922b66dd011159f41 SHA-256: 5d8dd5990a610303cd364ac99ec2746340b216119f80054aa5d1bcdf3de10d24
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.tw/app/406889139/legit-coin-master-hack-site-zyngaplayerforumscom-game-hack PDF link annotation
    • http://www.elibrary.perludem.org/repository/how-to-cheat-roblox-anti-idle_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-robux-for-free-on-pc-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-free-coins-in-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/hack-para-fame-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-card-codes-february-18-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-spin-online-tool-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-hack-app-android-download_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-zombie-rush-free-online_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/ear-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-real-hack-robux-real-encrypted_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-a-free-code-for-a-robux-card_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003330.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3330 23512 bytes
SHA-256: 673075641ec4ac33ab6f6d519d89330c4eaede4a99c9f7896a33eafc4b743e22
font_01_sfnt_off00006861.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6861 18928 bytes
SHA-256: 2d8f15398b0872070122c1c8280df31c6af84f2aed26de9ea3bfb6d3ad73ce84

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