Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6a06f3bed05b567…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 17:23:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: e962acbb3e770d0002524fa1c489b507 SHA-1: fda539925a1fa146fd356ef3d6ef893affb02306 SHA-256: d6a06f3bed05b5671ae34d1ccb72a7a571148460932df003c03ca05d3ad7a075
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 0.9980

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.tw/app/431946152/roblox-robux-hack-game-hack PDF link annotation
    • http://pengolahan.perpus.wima.ac.id/repository/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/minecraft-free-no-virus_GM479516143.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/coin-master-free_GM406889139.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/free-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/free-aresonal-serer-roblox_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/pokemon-go-free-unblocked_GM1094591345.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/how-to-get-roblox-money_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/free-robux-website_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/gamehunters-coin-master_GM406889139.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/get-robux-for-free-with-out-choice-of-getting-extra_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/hack-for-elemental-battleground-roblox_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/free-robux-cheat-download_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off0000326f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x326F 22156 bytes
SHA-256: fee695c815af0108667d5efc850b32e2605d90107a263249ce32c08ac19c4f16
font_01_sfnt_off00006396.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6396 18796 bytes
SHA-256: ac85a7f36e8d2c6b778aa8e0527eba638abc788d16e2325ecdb460050b0ba6ed

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