Malicious PDF — malware analysis report

Static analysis result for SHA-256 a03e7580582e136e…

MALICIOUS

PDF

34.8 KB Created: 2021-07-07 10:16:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: c5afe7d9c923e6429f1bf4dc3fe82ca9 SHA-1: cbaef4291861d2f9923d48618ba19aaa47ba5206 SHA-256: a03e7580582e136e995971818e02079dadf011a559bb053114a87add9d11f41d
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs and a high-confidence heuristic firing for a game hack redirect lure. The document body, though partially corrupted, contains references to 'Coin Master Free Spins Hack' and a URL that strongly suggests a phishing or scam attempt. The ML classifier also flagged this PDF as malicious with high confidence.

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/coin-master-free-spins-hack-iphone-game-hack PDF link annotation
    • https://digilib.stimlog.ac.id/repository/free-roblox-account-list-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-admin-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/sk8r-roblox-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-link-app_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/cheats-pet-simulator-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/god-mode-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/hack-roblox-users_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-scam_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-free-robux-no-password-for_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/boxing-simulator-2-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-robux-onroblox-and-pastebin_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-codes-on-phone_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-pet-simulator-noob-vs-pro-vs-hacker_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-groups-that-give-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-websites-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-roblox-adopt-me-accounts_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
font_00_sfnt_off00003230.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3230 22652 bytes
SHA-256: 94deb983ba5fc22bbe4cf8fa12b96302d98e1993b5da27507d4547c0532fba1c
font_01_sfnt_off000064f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F4 18512 bytes
SHA-256: f42da8955ac0b14df7498282519dbf61ee386aa1420e52cc2fe2324e7f413181

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