Malicious PDF — malware analysis report

Static analysis result for SHA-256 63f9d3f720386320…

MALICIOUS

PDF

34.3 KB Created: 2021-07-05 18:06:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: cdcc3078c9257b49791a87953a1ab7dd SHA-1: 2ea0f955414ddf153928e6e086f13c4192ef963d SHA-256: 63f9d3f720386320f7e9642f491e010f805f30601c4996110997465fa6780c48
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, with a primary focus on 'game hacks' and 'free generators' for popular games. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates a social engineering tactic to trick users into visiting malicious sites. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lures suggest a phishing or scam attempt, likely leading to further malware download or credential harvesting.

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/how-to-get-more-spins-on-coin-master-for-free-game-hack PDF link annotation
    • http://perpus.stfm.ac.id/repository/minecraft-pc-download-free-full-version_GM479516143.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/try-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-minecraft-thumbnails_GM479516143.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/will-minecraft-ever-be-free_GM479516143.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/coin-master-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/counter-blox-roblox-offensive-hacks-2021_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-robux-app-com_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-free-daily-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/roblox-sexually_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-hacks-android_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/robux-xyz_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_off00003064.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3064 22732 bytes
SHA-256: 76c859bb5b80f8db8d25052e0888a3957268ec3d1c6653223c226a332c8111bb
font_01_sfnt_off00006338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6338 18336 bytes
SHA-256: 12621307122dc6a065189aa67f7d6a9fc29493de1d62e5dd533d31b12572ea83

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