Malicious PDF — malware analysis report

Static analysis result for SHA-256 abe283f6f204e34c…

MALICIOUS

PDF

45.5 KB Created: 2021-06-03 10:21:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: f06abdf413f3ebb10d7f6d1aafc89fe6 SHA-1: 633a93815235752287f74dfd88b0aecd2936a495 SHA-256: abe283f6f204e34c8e1ceadd3f0098f1d18687971c6169e29603c8476cee39b0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a lure related to obtaining free Robux, directing the user to a malicious URL. The embedded URL and the document body content strongly suggest a phishing or scam attempt. The ML classifier also flagged this PDF as malicious, increasing confidence in its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.online/app/431946152/how-to-get-1-million-robux-for-free-2021-game-hack PDF link annotation
    • http://e-library.smkn1jombang.sch.id/repository/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-free-spins-2-5-2021_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/oprewards-points-generator_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/mcpe-master-hack-coin-apk_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-get-minecraft-pe-for-free-ios_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-unlimited-spins-apk-free-download_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-hack-coins-in-archery-master-3d_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-arsenal-hacks_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_off000052a9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52A9 25252 bytes
SHA-256: 26eb2d25f231921cdc258dc829553c192de132dc73b976b2e286db77400dcdef
font_01_sfnt_off00008d02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D02 19072 bytes
SHA-256: 6899649986c08cd88da4e8ab8a55ee52e34bf21c69bba097983649bb28a6798f

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