Malicious PDF — malware analysis report

Static analysis result for SHA-256 87dce408093d6306…

MALICIOUS

PDF

35.3 KB Created: 2021-07-04 01:56:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 984d99e7ec5ad12a35ff111eda37281b SHA-1: 1dcac84ee38073d0b26fe8c1710ff3b2c644ad71 SHA-256: 87dce408093d630639ee1a1fa0a6d05e717ffeea8c275f045847aa1cab83a298
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-risk heuristic firing for a game hack redirect lure, pointing to a URL that promises free spins for Pig Master and Coin Master. The document body also contains this URL, reinforcing the lure. While no scripts were extracted, the PDF structure and embedded URI strongly suggest a social engineering attack to redirect users to a potentially malicious site.

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/pig-master-coin-master-free-spin-game-hack PDF link annotation
    • https://library.uigm.ac.id/repository/how-to-get-free-robux-really-works-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-do-you-get-robux-free-glitch-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-minecraft-codes-2021_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-bee-swarm-simulator-super-mega-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-roblox-anime-free-shirts_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/mining-simulator-hack-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/comments-about-bloxcom-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-bio-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/best-roblox-free-hack-clients_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-mod-apk-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-game-hunters-club_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-paintball-cheats_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-clothes-hack-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-that-really-works-that-dont-need-human-verifacation_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-coloring-pages-free_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
stream_002_off00003353.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3353 23000 bytes
SHA-256: 8734e71b15468021eaed6d4e9b37b74849a860e02a3451565997d3bca5b3cba7
font_01_sfnt_off0000672a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x672A 18328 bytes
SHA-256: 7fc6a102d94eb6ecd4fce1d81166f8bf1d44e62dd1c3248b5361d895f7f4d4be

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