Malicious PDF — malware analysis report

Static analysis result for SHA-256 f66623febc8cb447…

MALICIOUS

PDF

45.3 KB Created: 2021-06-09 04:15:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 0a289dd1413da3c75544da7794813527 SHA-1: aa04d08eabe06d758340a8b81c1b225b5083354c SHA-256: f66623febc8cb44744c22f3eff9f0c38adea250f5b3cd6766575a287f2c615d2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a high-confidence heuristic firing indicating a "game hack" lure. The document body, though partially corrupted, contains text related to "How To Hack Roblox Games Easy" and references the malicious URL. The primary heuristic suggests the document is designed to redirect users to a site offering game hacks, likely as a pretext for malware delivery or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/how-to-hack-roblox-games-easy-game-hack PDF link annotation
    • http://daskrimti-jabar.web.id/library/repository/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/robux-sites_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/minecraft-free-app_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-roblox-codes_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/destroying-roblox-hack_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/hack-coin-master-spin-apk_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/robux-free-c_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-free-spins-and-coins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/minecraft-free-reddit_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/flip-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/coin-master-cards-free-cards_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/ac-market-coin-master-hack_GM406889139.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_004_off000051fa.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51FA 25388 bytes
SHA-256: 7507c801e309375c2109f43d7b38d302fd637fc79cf57b3b12222874e771a00f
font_01_sfnt_off00008cfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CFD 18784 bytes
SHA-256: d273b82ad9f351bd151094a3cf505ed22bbe66ea961ff1327baa7f6f919d4748

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