Malicious PDF — malware analysis report

Static analysis result for SHA-256 f49b3b967bd49c8d…

MALICIOUS

PDF

33.7 KB Created: 2021-07-05 11:28:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: eaccf9b82c43c5e069d223c62f83662e SHA-1: bf415e01f93c501dd1ad0f63f3b3e5f99408e647 SHA-256: f49b3b967bd49c8d9a030e74b36225b120e03345bedb2be3cb60abb84cf93ab9
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/431946152/free-robux-discord-game-hack PDF link annotation
    • http://lib.akpnbahtera.ac.id/repository/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-hack-spins-download_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/pokemon-go-free-spoofing_GM1094591345.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/do-coin-master-hacks-work_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-chest-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-daily-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-coin-master-gold-cards_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/grand-theft-auto-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/earn-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/hack-coin-master-site-rssingcom_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/how-to-duplicate-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/blox-land-free-robux_GM431946152.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_off00002c4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C4B 22388 bytes
SHA-256: 5736af394fa16990eda7ec6dfe61053219089434927820286d543957c9a3ec44
font_01_sfnt_off00005dff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DFF 19176 bytes
SHA-256: 020ce166f16710322681f054c1b4dde0a486d6154bce33e9144977aac3b53b16

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