Malicious PDF — malware analysis report

Static analysis result for SHA-256 62285618048c88e4…

MALICIOUS

PDF

46.4 KB Created: 2021-05-10 18:37:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: d78d106e5a6373c1b7ca608a17097ae1 SHA-1: 3422a09119039d667e9bd2de0d536417da363958 SHA-256: 62285618048c88e481fcd6601e7cc872743307bd761d0cab6e403f84ce5e186b
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 0.8948

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/406889139/free-mod-apk-coin-master-game-hack PDF link annotation
    • http://www.gkikotawisata.org/library/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.gkikotawisata.org/library/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.gkikotawisata.org/library/repository/toolbox-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://www.gkikotawisata.org/library/repository/free-robux-now_GM431946152.pdfIn PDF document text
    • http://www.gkikotawisata.org/library/repository/coin-master-free-spins-5-10-2021_GM406889139.pdfIn PDF document text
    • http://www.gkikotawisata.org/library/repository/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://www.gkikotawisata.org/library/repository/coin-master-hack-generator-tool_GM406889139.pdfIn PDF document text
    • http://www.gkikotawisata.org/library/repository/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://www.gkikotawisata.org/library/repository/roblox-inappropriate-games_GM431946152.pdfIn PDF document text
    • http://www.gkikotawisata.org/library/repository/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://www.gkikotawisata.org/library/repository/apps-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.gkikotawisata.org/library/repository/coin-master-free-coins-twitter_GM406889139.pdfIn PDF document text
    • http://www.gkikotawisata.org/library/repository/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.gkikotawisata.org/library/repository/wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.gkikotawisata.org/library/repository/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://www.gkikotawisata.org/library/repository/coin-master-cheat-codes_GM406889139.pdfIn PDF document text
    • http://www.gkikotawisata.org/library/repository/coin-master-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.gkikotawisata.org/library/repository/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://www.gkikotawisata.org/library/repository/avatar-roblox-game_GM431946152.pdfIn PDF document text
    • http://www.gkikotawisata.org/library/repository/free-spins-coin-master-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004de7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DE7 25444 bytes
SHA-256: f5a3f7b5dbf5b4aa520c6a29a02eafc5387817ac3f7014710027ccb674f8fa72
font_01_sfnt_off0000881b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x881B 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off00009345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9345 18228 bytes
SHA-256: 94a160b3eebda81a774dce60345efae5de7f6df629fda5b11a26048b94d99866

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