Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce9bda05456b5048…

MALICIOUS

PDF

43.0 KB Created: 2021-05-16 04:05:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fd2536b3c5ab595e51363c089fd2f5fa SHA-1: 20dd03c54043f56a358a95c05b67955aea77aa16 SHA-256: ce9bda05456b5048e31e238dfb2f63dbb069447b8ef61dd430548fc3bd64c52c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure for a game hack, specifically mentioning 'Robux' and linking to external URLs that likely host malicious content or further redirects. The presence of a download button heuristic reinforces the social engineering aspect of this lure. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/robux-download-game-hack PDF link annotation
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/coin-master-free-download-pc_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/synapse-roblox-free-download_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/roblox-money-hack_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/coin-master-free-coin-and-spin-app_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/10-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/coin-master-hack-ios-download-2021_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/free-robux-only-username_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-iphone_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/how-can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/robux-online_GM431946152.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_003_off0000497a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x497A 26208 bytes
SHA-256: 3a543908730a63522165d1318ba0b5359a5829bdc81417a4e89131d4c07f8e88
font_01_sfnt_off00008436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8436 18656 bytes
SHA-256: 643f530bc401710360b2f74e2e590a7f6ab15445ebda3165faa7e078ea1fa698

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