Malicious PDF — malware analysis report

Static analysis result for SHA-256 10ad2fb18e6de0fd…

MALICIOUS

PDF

45.7 KB Created: 2021-05-14 07:33:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: cb5196ea6c457747d0212ef697d70827 SHA-1: 528ed3678dcf329e210b39f0b674995dadab156e SHA-256: 10ad2fb18e6de0fd146805e9568f12dc816889432ecf6de371158e5173d77aa9
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 0.9432

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-hack-2021-game-hack PDF link annotation
    • http://www.laborvetro.org/images/master-8-ball-pool-free-coins_GM406889139.pdfIn PDF document text
    • http://www.laborvetro.org/images/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.laborvetro.org/images/free-unlimited-coin-master-online-tool_GM406889139.pdfIn PDF document text
    • http://www.laborvetro.org/images/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://www.laborvetro.org/images/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.laborvetro.org/images/free-spin-today-coin-master_GM406889139.pdfIn PDF document text
    • http://www.laborvetro.org/images/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://www.laborvetro.org/images/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • http://www.laborvetro.org/images/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.laborvetro.org/images/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://www.laborvetro.org/images/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
    • http://www.laborvetro.org/images/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://www.laborvetro.org/images/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.laborvetro.org/images/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.laborvetro.org/images/minecraft-116-free-download_GM479516143.pdfIn PDF document text
    • http://www.laborvetro.org/images/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • http://www.laborvetro.org/images/card-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.laborvetro.org/images/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.laborvetro.org/images/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://www.laborvetro.org/images/how-to-get-free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a66.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A66 25228 bytes
SHA-256: 2b60c868db9d0dd2d48b0b6659920bf29b4f8ade4ce3aa4d5bc8753e374d00eb
font_01_sfnt_off0000850f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x850F 2844 bytes
SHA-256: baad2f3f6808f4af03fa9398e38c580c8d846f7f773a947d8cc1f39b2753d31a
font_02_sfnt_off00008ed0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ED0 18648 bytes
SHA-256: 960613bb0fa4c19a2503237e067522a4d484b1b5f3e7387dbdf2c2d9282ca05f