Malicious PDF — malware analysis report

Static analysis result for SHA-256 b989b1b376db1919…

MALICIOUS

PDF

35.7 KB Created: 2021-07-01 22:58:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 135adc80636a2e55c77bfda961c79846 SHA-1: 3a7a811bd6bceae404dee0d7999a4fb617d4df00 SHA-256: b989b1b376db1919fb66f9d6dbd562f5d5810b3030b8ffbaf37b87a0c917942e
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs, with a primary redirector pointing to a site offering 'free spin coin master apk game hack'. This lure, combined with the ML classifier's high confidence score, indicates a malicious intent to trick users into visiting a potentially harmful site. No scripts were extracted, but the document's structure and embedded links strongly suggest a phishing or malware distribution attempt.

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/406889139/free-spin-coin-master-apk-game-hack PDF link annotation
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/games-in-roblox-that-give-you-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/free-brighton-and-hove-buses-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/roblox-free-robux-hack-tool_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/free-bobux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/pokemon-go-free-verizon-code_GM1094591345.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/daily-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/how-to-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/roblox-assassin_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/coin-master-free-spin-group_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
font_00_sfnt_off00003426.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3426 23320 bytes
SHA-256: b1ea3f23a11c94252933e277fa7f9e907d7a5a98c10e0c5f20d76822d878e290
font_01_sfnt_off000068c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68C8 18344 bytes
SHA-256: 7d9887165ef16feadfba3a4a15f66fbc2523fe3814b25ea6526ef71165c50439

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