Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b188e396996a3e2…

MALICIOUS

PDF

41.0 KB Created: 2021-05-13 02:40:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ba7970cb555d7ccd4587c4eb0d9152a6 SHA-1: 81804741893d8a5d8853edd366707a57344be46f SHA-256: 4b188e396996a3e2d8711acbd35bea539c00555fd119c0b291cd61985bb55fb4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/406889139/como-hackear-coin-master-ios-game-hack PDF link annotation
    • http://osteonad.com/images/robux-website_GM431946152.pdfIn PDF document text
    • http://osteonad.com/images/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://osteonad.com/images/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://osteonad.com/images/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://osteonad.com/images/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://osteonad.com/images/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://osteonad.com/images/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://osteonad.com/images/how-do-i-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://osteonad.com/images/how-to-get-free-skins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://osteonad.com/images/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://osteonad.com/images/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://osteonad.com/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://osteonad.com/images/free-spins-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://osteonad.com/images/hacks-for-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://osteonad.com/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://osteonad.com/images/coin-master-hack-ios-cydia_GM406889139.pdfIn PDF document text
    • http://osteonad.com/images/minecraft-pe-hacks-2021_GM479516143.pdfIn PDF document text
    • http://osteonad.com/images/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdfIn PDF document text
    • http://osteonad.com/images/hack-coin-master-app_GM406889139.pdfIn PDF document text
    • http://osteonad.com/images/rbx-place-free-robux_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_off000047d1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47D1 24124 bytes
SHA-256: 0a8661f476e0c83c40d9a3de4a8eacc33d9754d6344cbaee7b9c30b79d1f2ed0
font_01_sfnt_off00007eb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB0 17976 bytes
SHA-256: c17a11528d6db3e3ae92482534db384e3139a2f0aff777cff95d74958b5837df

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