Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f1449b7c504e79d…

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 11:12:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 0c558d0568d66eceaffacd6373761487 SHA-1: 148ca2f2eb62069f5816e6da8174ef3e9c99afc7 SHA-256: 6f1449b7c504e79ded72469bb1b718b9e33f40ea03e77e5ac3bd1f9584f14ec4
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/406889139/coin-master-game-hack-apk-game-hack PDF link annotation
    • https://elearning.min5bandarlampung.sch.id/__statics/gudangsoal/files/best-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.min5bandarlampung.sch.id/__statics/gudangsoal/files/coin-master-app_GM406889139.pdfIn PDF document text
    • https://elearning.min5bandarlampung.sch.id/__statics/gudangsoal/files/inappropriate-roblox-games-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min5bandarlampung.sch.id/__statics/gudangsoal/files/demon-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.min5bandarlampung.sch.id/__statics/gudangsoal/files/roblox-controversy_GM431946152.pdfIn PDF document text
    • https://elearning.min5bandarlampung.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • https://elearning.min5bandarlampung.sch.id/__statics/gudangsoal/files/roblox-how-to-get-unlimited-free-robox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min5bandarlampung.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • https://elearning.min5bandarlampung.sch.id/__statics/gudangsoal/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.min5bandarlampung.sch.id/__statics/gudangsoal/files/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.min5bandarlampung.sch.id/__statics/gudangsoal/files/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://elearning.min5bandarlampung.sch.id/__statics/gudangsoal/files/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • https://elearning.min5bandarlampung.sch.id/__statics/gudangsoal/files/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • https://elearning.min5bandarlampung.sch.id/__statics/gudangsoal/files/coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.min5bandarlampung.sch.id/__statics/gudangsoal/files/redeem-code-roblox-free-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min5bandarlampung.sch.id/__statics/gudangsoal/files/coin-master-online-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://elearning.min5bandarlampung.sch.id/__statics/gudangsoal/files/get-free-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.min5bandarlampung.sch.id/__statics/gudangsoal/files/daily-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.min5bandarlampung.sch.id/__statics/gudangsoal/files/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • https://elearning.min5bandarlampung.sch.id/__statics/gudangsoal/files/rbx-free-robux_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_002_off00003233.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3233 22904 bytes
SHA-256: b8943df25793f933dff33ccb69c1dc1d7e97076c863389c7db4c5678946f5dec
font_01_sfnt_off00006567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6567 18440 bytes
SHA-256: 571ab4b458d0dac508f9535f575fba5b7e94d60ff2bdf8022b00b4ca59ab09de

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