Malicious PDF — malware analysis report

Static analysis result for SHA-256 0238e177735cba4d…

MALICIOUS

PDF

44.7 KB Created: 2021-06-11 08:39:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c5f2a4e0f7d58909d9fdc615f6394f81 SHA-1: dc177f3ba84d02fe53776cb9db1c2987a372d220 SHA-256: 0238e177735cba4dd32f7362fc0f36ba34c706cf82d709e01279bd52503d28cf
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are disguised as game hacks or generators, specifically targeting popular games like Roblox and Coin Master. The primary link, 'https://netcdn.tw/app/431946152/roblox-mad-city-hack-money-francais-game-hack', is flagged as a lure for game hacks. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or social engineering attempt to redirect users to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/roblox-mad-city-hack-money-francais-game-hack PDF link annotation
    • http://smpn1sda.sch.id/slims/repository/www-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/what-do-roblox-points-do_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-robux-master_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-get-2021-robux-on-roblox-free-2021_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/hack-coin-master-343-apk_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/minecraft-hacked-client-bedrock_GM479516143.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-robux-apps-that-work-2021_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coinmaster_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/pokemon-go-free-spoofer-ios_GM1094591345.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-get-coin-master-card-free_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/claim-free-robux-button_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_004_off00004ef4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EF4 25140 bytes
SHA-256: 2ce44eb2d733af4811892d7c0e380748a70adc1c6f81ed319b567ff7ca3d54dd
font_01_sfnt_off000089a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89A1 19120 bytes
SHA-256: 84a13052845e6bb904970e140160b7a3fdd90cc4b0a371f151d959e5bf12ec74

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