Malicious PDF — malware analysis report

Static analysis result for SHA-256 58af296ab663cabc…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 19:20:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c61debc28ed198d5062c22c09c261abb SHA-1: 0326fb71b321daa3197167acda7731dea5265180 SHA-256: 58af296ab663cabc341e64a63b481d3748711f489f889d9e6600a1be8d72b3d1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary link pointing to a "game hack" lure. This suggests the document is designed to trick users into visiting a malicious website, likely for phishing or to download further malware. No scripts were extracted, but the presence of external URIs and a game hack lure strongly indicates a malicious intent.

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-claim-free-spins-game-hack PDF link annotation
    • http://perpustakaan.idia.ac.id/repository/install-free-game-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/coin-master-free-bonus_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/coin-and-spin_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/is-roblox-free-on-nintendo-switch_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/fiverr-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/today-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/getrobux-info_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/free-spin-coin-master-instagram_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/robux-only_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/how-to-stop-hackers-from-hacking-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/minecraft-world-free-download_GM479516143.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/coin-master-free-spins-facebook_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
stream_002_off0000309f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x309F 22860 bytes
SHA-256: 2c20d36eaae269214b12a91855b711c2d2cb271266e53241c9f54e10c1d0b084
font_01_sfnt_off000063ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63AC 18508 bytes
SHA-256: 1abd1480299989abb1f48682f677ba61eec9d98677dd9594eb02aefabe69620b

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