Malicious PDF — malware analysis report

Static analysis result for SHA-256 092f45f454809885…

MALICIOUS

PDF

48.1 KB Created: 2021-06-04 01:32:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: b64090a6958aa3345b115641af37639e SHA-1: 4308542448f64e0ff5fe98c9a87ded54a20c6d95 SHA-256: 092f45f45480988585d490315eba26e4998a80a70b08e553d5b30d4c104cba04
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 0.9796

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/i-got-hacked-on-roblox-game-hack PDF link annotation
    • http://elibrary.perludem.org/repository/freespinandcoin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-free-spin-app-iphone_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-minecraft-com_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-hack-apk-35-18_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-key-free-spin_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/card-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-cheat-in-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/pubg-uc-pakistan_GM1330123889.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-gift-link-hack_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/tiktok-free-10k-followers_GM835599320.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-do-you-get-roblox-for-free_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_off000053a7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53A7 25904 bytes
SHA-256: 22afb92825274a4fa15a865f42db3dc26975db235f4ba7384ea1895edcdb2bfc
font_01_sfnt_off00008e74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E74 2940 bytes
SHA-256: ae8acc7f13e86db3aed98d7dfb73e70e16f4dedb45e9f0467460b76f54e1a1bb
font_02_sfnt_off00009882.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9882 18460 bytes
SHA-256: a8a49c36ef4b2531a5f792820ad3efe99a39c3e474aae1f279e7d577006455a1

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