Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5baae02074b5f47…

MALICIOUS

PDF

43.1 KB Created: 2021-05-10 18:05:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d64b7f4d9569ff6836e265aaf317ea9d SHA-1: 4df754a4cd829daac596ad97b41612d31c32ad0a SHA-256: a5baae02074b5f47d4c4fc0b361cd60fd05a88e1a7b9448bb5198f2915bd12b8
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 0.9969

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/479516143/best-free-hacked-client-game-hack PDF link annotation
    • http://sttlets.education/senayan//repository/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/minecraft-sign-up-free_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/coin-master-hack-version_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-can-i-get-free-coinsn-coin-master_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/robux-in_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-online-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/coin-master-gold-cards-free-2021_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/coinmaster-spin-ml-free_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/easy-robux-generator_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/coin-master-hack-apk-35-33_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/minecraft-hacks-for-2b2t_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/minecraft-hacks-pc_GM479516143.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_off00004d0b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D0B 25508 bytes
SHA-256: 942e377b65045f311a669a3799e9bff99860d3d3f0dadd4415402cfb13ca24d7
font_01_sfnt_off000086c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86C2 18200 bytes
SHA-256: f9e1919cba188461631b4d1f41fa639bbd05523e10553c39d41e2ec7b66d941b

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