Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cc1f112519e4542…

MALICIOUS

PDF

46.5 KB Created: 2021-06-03 06:23:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 97e14c3c0c23bad989e8e938ec864171 SHA-1: 967f973f6fed0fc3808d35526a1cc77fdc76a4d9 SHA-256: 4cc1f112519e4542293891ea846efe87772dcd174eaab4bd846a65b42b97bf82
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 0.9748

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/online-coin-master-free-spin-app-game-hack PDF link annotation
    • http://perpus.masda.ac.id/repository/how-many-levels-are-there-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/tiktok-free-hosting_GM835599320.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/pubg-uc-website-india_GM1330123889.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/freespincoin-masterlinkdownload_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-e-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/instagram-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-hacked-apk_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-online-cheat_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-coins-link-2021-deutsch_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/minecraft-packs-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-no-download-app-but-play-for-free_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-change-your-username-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/can-i-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/guide--coin-master-free-tips_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/picture-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-minecraft-skins-java_GM479516143.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_004_off00005008.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5008 25604 bytes
SHA-256: e3c934a0b0f20b8ffe3e7ba183bc099fb19b4bf50801a0327a6be937f6a0bf66
font_01_sfnt_off00008a35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A35 2824 bytes
SHA-256: a0d6c1ef1f7405ab05245801e4abbc2877925f97898db53811df9ab010e978fa
font_02_sfnt_off000093d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93D3 17960 bytes
SHA-256: 00bab635c2a0cb1a50d20431aa9d2604bce9bd5ee105395901c4159e72e6ab85

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