Malicious PDF — malware analysis report

Static analysis result for SHA-256 e35c8d92e727edb9…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 23:43:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8e64f4fb2ee546876ce492db6091d2df SHA-1: fd2d9cd978dc0f7d1a5d7b7d59e075285666fc3d SHA-256: e35c8d92e727edb957b4392b33ac7d3ce6a42083498df7c18b72d0d4d9ec898c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs that redirect to a 'game hack' lure, aiming to trick users into visiting malicious sites. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a download button lure further supports a malicious intent. No scripts were extracted, but the document's structure and linked content indicate a phishing or scam attempt.

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/get-free-spins-from-coin-master-game-hack PDF link annotation
    • http://library.umla.ac.id/repository/50-free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/pop-slots-free-vegas-casino-slot-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/minecraft-items_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-money-hack_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/mcpe-download_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-to-make-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/can-you-download-roblox-on-ps4-free_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/tiktok-free-printables_GM835599320.pdfIn PDF document text
    • http://library.umla.ac.id//repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/hack-coin-master-spin-apk_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-free-to-pay-or-codes_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/robux-download_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-free-spin-reward-links_GM406889139.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_off00003072.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3072 23124 bytes
SHA-256: a525ae84f688393983ac9c744def7865c4007625a42dc5bbf6f084b0bbe6777e
font_01_sfnt_off00006477.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6477 18432 bytes
SHA-256: c0b57905aa6132a76f473c165f2eca47ceefa3f32185afb98ca57dd1bd98a4e0

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