Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f8bd1e2e59c4a97…

MALICIOUS

PDF

43.7 KB Created: 2021-06-03 09:03:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 68adf1a5771ba67b2c373bc835e86cb3 SHA-1: ab78de78835248274a4e2782f867888ff49d6efa SHA-256: 4f8bd1e2e59c4a9777f48b36fec44a6342a462662a78370057d7b9e94f80f6e2
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/hack-para-coin-master-sin-verification-game-hack PDF link annotation
    • https://trustindoutama.com/assets/CKImages/files/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/coin-master-free-spin-link-list_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/how-to-hack-coin-master-with-game-guardian_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/mc-update_GM479516143.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/hack-para-coin-master-sin-verification_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/coin-master-hack-2021-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005126.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5126 24532 bytes
SHA-256: ad7d1f650fdf85182892ab84f7964face601b1ec12c20ee5c09a6366b11745fb
font_01_sfnt_off00008914.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8914 18004 bytes
SHA-256: 5a160e1e3a55dba1252c7000e4eeb391006454b083247bbd903365d672dc9cd4

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