Malicious PDF — malware analysis report

Static analysis result for SHA-256 9160d9897d74d682…

MALICIOUS

PDF

43.6 KB Created: 2021-06-03 10:57:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 495082522540f35b6f2d2bfa58754cf3 SHA-1: 7d6b3ccfc8c9a5f05fd774d4685a71efeae1103a SHA-256: 9160d9897d74d6820d65f9c0ecaa94ed13605b7c709a354d77930fef767d2494
82 Risk Score

Malware Insights

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

The PDF file contains a high-severity heuristic indicating it's a game hack redirector lure, pointing to a suspicious URL. The ML classifier also flagged it as malicious. The document body, though partially corrupted, contains references to 'Wurst Hacked Client' and the malicious URL, reinforcing the lure to a site offering game cheats. This suggests an attempt to trick users into visiting a malicious site, likely for further malware delivery or exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/479516143/wurst-hacked-client-game-hack PDF link annotation
    • https://perpustakaan.stami.ac.id/repository/roblox-svg-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/how-to-hack-coin-master-game-ios_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/free-gold-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/how-to-make-a-free-server-in-minecraft-java_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-free-spins-link-download-ios_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/roblox-builders-club-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/minecraft-pocket-edition-free-apk_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/minecraft-login-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/archery-master-3d-coins-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/avatar-de-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/coin-master-gold-cards-hack-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/easypoints-gg-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/hack-coin-master-apk-ios_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/how-to-get-spins-for-free-on-coin-master_GM406889139.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_off0000512e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x512E 24268 bytes
SHA-256: 7d6b16a55ac31c5b3a63c38172ce7cd23dd7abbd27c9dcb1a944551f6cd93634
font_01_sfnt_off000087bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87BB 18324 bytes
SHA-256: c0530dae0908aae9c65ae0320e7c709be86d077002ac81f35dce260cac78bd58

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