Malicious PDF — malware analysis report

Static analysis result for SHA-256 434b19e0dc72a8f1…

MALICIOUS

PDF

35.0 KB Created: 2021-07-03 13:55:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 83384a21419848acf584600f5b5eeb93 SHA-1: 1a74f7fa98261e661d6e64ce839210a5cc369295 SHA-256: 434b19e0dc72a8f12a1a7f909313b8233d8f1c7d8546465fbb8ce2c0759f36d4
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/regal-world-coin-master-game-hack PDF link annotation
    • http://e-learning.man3pyk.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://e-learning.man3pyk.sch.id/__statics/gudangsoal/files/spare-reborn-roblox-hack_GM431946152.pdfIn PDF document text
    • http://e-learning.man3pyk.sch.id/__statics/gudangsoal/files/creator-give-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://e-learning.man3pyk.sch.id/__statics/gudangsoal/files/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://e-learning.man3pyk.sch.id/__statics/gudangsoal/files/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • http://e-learning.man3pyk.sch.id/__statics/gudangsoal/files/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://e-learning.man3pyk.sch.id/__statics/gudangsoal/files/always-day-roblox-hack_GM431946152.pdfIn PDF document text
    • http://e-learning.man3pyk.sch.id/__statics/gudangsoal/files/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://e-learning.man3pyk.sch.id/__statics/gudangsoal/files/generator-robux_GM431946152.pdfIn PDF document text
    • http://e-learning.man3pyk.sch.id/__statics/gudangsoal/files/coin-master-free-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://e-learning.man3pyk.sch.id/__statics/gudangsoal/files/game-guardian-roblox-invisible-hack_GM431946152.pdfIn PDF document text
    • http://e-learning.man3pyk.sch.id/__statics/gudangsoal/files/free-robux-leaked_GM431946152.pdfIn PDF document text
    • http://e-learning.man3pyk.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://e-learning.man3pyk.sch.id/__statics/gudangsoal/files/androeed-ru-minecraft_GM479516143.pdfIn PDF document text
    • http://e-learning.man3pyk.sch.id/__statics/gudangsoal/files/adopt-me-roblox-hack-place_GM431946152.pdfIn PDF document text
    • http://e-learning.man3pyk.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://e-learning.man3pyk.sch.id/__statics/gudangsoal/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://e-learning.man3pyk.sch.id/__statics/gudangsoal/files/free-downloads-for-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://e-learning.man3pyk.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
    • http://e-learning.man3pyk.sch.id/__statics/gudangsoal/files/how-do-you-download-minecraft-for-free_GM479516143.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_002_off000031fd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31FD 23088 bytes
SHA-256: 7cf48d35ae97842af2997b77647bfc6000190e08fe4b03f7c81d304efecfc53e
font_01_sfnt_off000065d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65D9 18280 bytes
SHA-256: 5aed029aeaebf97b3b18bb1c617ca2ab564e35296fc4693c3058f9041375acb1

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