Malicious PDF — malware analysis report

Static analysis result for SHA-256 55a24af33d4ba562…

MALICIOUS

PDF

41.8 KB Created: 2021-05-18 00:23:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4981050b4cd9b465f5bcb255388618ce SHA-1: 3e1a9886cc09b88e6a0a0a90adbe982e5ff8a73a SHA-256: 55a24af33d4ba562eebe4572a52a3db004f6c17f87e02a37c88a4de39aa47896
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure related to free game currency ('Robux') and hacks to entice users. It contains multiple links, with the primary malicious URL being https://netcdn.xyz/app/431946152/free-robux-generator-codes-game-hack, which likely leads to a further malicious resource or exploit. The ML classifier also strongly indicated maliciousness.

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/free-robux-generator-codes-game-hack PDF link annotation
    • https://www.brainpads.com/images/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.brainpads.com/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.brainpads.com/images/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • https://www.brainpads.com/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.brainpads.com/images/roblox-com-www_GM431946152.pdfIn PDF document text
    • https://www.brainpads.com/images/download-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.brainpads.com/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.brainpads.com/images/how-to-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://brainpads.com/images/static-moonactive-net-link_GM406889139.pdfIn PDF document text
    • https://brainpads.com/images/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://brainpads.com/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.brainpads.com/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://brainpads.com/images/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • https://brainpads.com/images/roblox-svg-free_GM431946152.pdfIn PDF document text
    • https://brainpads.com/images/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • https://brainpads.com/images/roblox-controversy_GM431946152.pdfIn PDF document text
    • https://brainpads.com/images/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • https://brainpads.com/images/robux-converter_GM431946152.pdfIn PDF document text
    • https://www.brainpads.com/images/how-to-hack-coin-master-root_GM406889139.pdfIn PDF document text
    • https://brainpads.com/images/coin-master-facebook-hack_GM406889139.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_off00004690.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4690 26484 bytes
SHA-256: 5a889a2256ddd573b66f4cd19faa7bb865be595eb9e8a5b056d303517c5adb49
font_01_sfnt_off0000802b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x802B 18520 bytes
SHA-256: a3c42500ab941ca6b3cc9f1b186676fd5f7f9f0c0249e27b539405b68f11e4ed

Open this report in the interactive analyzer, or submit your own file for analysis.