Malicious PDF — malware analysis report

Static analysis result for SHA-256 595c2235b87ce41f…

MALICIOUS

PDF

44.2 KB Created: 2021-06-03 05:05:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 19185ee5ca0a67bf82abc65eb0bd2877 SHA-1: 1c180d391c92fe6b4fdde5cc3dfb055667782b83 SHA-256: 595c2235b87ce41fb0e39e378e8f4fe8ebc87328cb3ebd5cfca4637c8a680680
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 0.9865

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.online/app/406889139/coin-master-free-spins-link-2021-game-hack PDF link annotation
    • http://lib.baruna-husada.ac.id/repository/2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/coin-master-card-collection-link_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/flip-master-free-coins_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/how-to-generate-free-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/descargar-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/free-minecraft-codes-2021_GM479516143.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/coin-master-ids-for-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/xray-hack_GM479516143.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/how-you-get-robux_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/coin-master-hack-mod-apk-35-8_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
stream_004_off00004ec0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EC0 25604 bytes
SHA-256: 362da4614b834fa5620b4873cc7252dd0534355929eca569dcfafdda36f704da
font_01_sfnt_off00008961.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8961 18456 bytes
SHA-256: 405c435adaafa0da304b7a4986d8f56c56dc87ed278d5cff2ac0c57977d8d7e3

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