Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5b7c6674fc7fba4…

MALICIOUS

PDF

33.9 KB Created: 2021-06-27 19:01:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 48beedb4f4c99d025f51286a6e68bf25 SHA-1: 4e2fb3150f210c60169839f7367ff7259edd3837 SHA-256: a5b7c6674fc7fba4c1ef8552a6e742659b4064f7322b73097daa69da0d60b3b0
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 0.9980

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.co/app/431946152/back-to-hack-roblox-id-game-hack PDF link annotation
    • http://slim.sisminkada.net/repository/rbx-hut_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/i-got-hacked-playing-roblox_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-donation-group_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-highschool-money-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/village-3-coin-master_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-jailbreak-how-to-get-free-lamborghini_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-free-tbc_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/hack-all-games-in-roblox_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-admin-hack-android_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/take-a-quize-for-free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/hack-robux-july-2021_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-hack-roblox-jailbreak-for-vip-server_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-hack-apk-35-18_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-free-rich-accounts-2021_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
font_00_sfnt_off00002e28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E28 22368 bytes
SHA-256: 2bc30e8bb8f63c33a0f24fe9e979ac1500d525d37257976635b9990922cdf548
font_01_sfnt_off00005fae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAE 18828 bytes
SHA-256: 9c2b6c42a9d123cc84f9419a28d981700c44c42ccba366715b53ba17c6ddb489

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