Malicious PDF — malware analysis report

Static analysis result for SHA-256 97e0ef6697012247…

MALICIOUS

PDF

50.1 KB Created: 2021-06-08 17:34:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 14dbd2bd068370e18fed69b6280d6638 SHA-1: ca8da371c6c3a1440d204b02a2589452b94daf1f SHA-256: 97e0ef6697012247ef8b7cd0c81a930677f03003234644b5825c28f64f69fde8
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by an ML classifier. It uses brand-impersonation credential phishing. 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 0.9789

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.tw/app/431946152/se-puede-hackear-roblox-con-la-nueva-actualizacion-game-hack.
  • 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.tw/app/431946152/se-puede-hackear-roblox-con-la-nueva-actualizacion-game-hack PDF link annotation
    • https://pustaka.widyakartika.ac.id/repository/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-50-spin-link_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/clean-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-hack-someone-robloxs-account_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-free-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-hack-roblox-accounts-tutorial-scripting_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-place-rewards_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-hack-lost-world-2021_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-chest-link_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/epic-mining-2-roblox-hack_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-hack-apk-july-29_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/hackear-coin-master-sin-root_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/buy-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/minecraft-for-macbook-free_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-online-game_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-get-free-cards_GM406889139.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_off0000569b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x569B 27376 bytes
SHA-256: b78d10c59877c434a75b0e7116dcc9b8d000fca037f4a0f934ed9bcefa47d78c
font_01_sfnt_off00009533.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9533 2820 bytes
SHA-256: 972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714
font_02_sfnt_off00009ed3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9ED3 19068 bytes
SHA-256: f9dd1138acd90d09d19259446d317fd58d1f1614c8d8aeff3ad2d4969d7ab302

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