Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4a3f676afa56364…

MALICIOUS

PDF

34.7 KB Created: 2021-07-06 00:00:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 8015649684edcfc502d828f4094c4c4b SHA-1: 9a52353f4b587cd8a696e43ec75b8f998398b685 SHA-256: b4a3f676afa5636441a2b609681829f92b2c1987ddf40a858040ade78493e135
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic firing for a game hack lure, directing users to a suspicious URL. The document body also contains this URL, reinforcing the lure. While no scripts were extracted, the overall structure and content strongly suggest a social engineering attack aimed at tricking users into visiting a 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/how-to-get-free-spins-coin-master-game-hack PDF link annotation
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/microsoft-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-gamepasse-roblox-2021-august_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/ac-market-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/site-de-hacke-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-builders-club-free_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/cheats-for-roblox-bee-swarm-simulator_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/info-roblox-com-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-hack-no-survey_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-how-to-get-free-robux-using-injection_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/the-supremacy-roblox-free_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-pc-download-free-full-version_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-tower-battles-hacked_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-quick-and-easy-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-games-to-get-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/play-minecraft-for-free-on-pc_GM479516143.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_off000030c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C7 23100 bytes
SHA-256: e1dfbe2729bfc88f4e0baff320fd8476e68ca107135eea7c09ff3285fcdc98e9
font_01_sfnt_off000064bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64BB 18336 bytes
SHA-256: 23f71a9ba4d854b783c042dde3b810d75211435ebb04f16eb6963276a01a3aa2

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