Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ac8875b5a4cb5e3…

MALICIOUS

PDF

41.9 KB Created: 2021-05-18 03:40:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 608d8688808ce42626cf0ebbb758c80a SHA-1: 30240bc557a2e8b8e3e7e0aab39c974b4d033734 SHA-256: 3ac8875b5a4cb5e3aa5d6fda82b8409633eb771d9a4f9fd3f76db1d6f2d2daf6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a high-confidence heuristic indicating it links to a game hack lure. The document body and extracted URLs reinforce this, pointing to sites offering 'free generators' or 'game hacks'. While no scripts were directly extracted, the nature of the lure suggests it is intended to redirect users to potentially malicious websites that may host further payloads or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/coin-master-free-link-facebook-game-hack PDF link annotation
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/free-script-executor-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/roblox-free-accessories_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/minecraft-114-download_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/coin-master-free-link-daily_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/hack-mod-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/coin-master-free-spins-daily-1-ga_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/gameoffice-net-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/minecraft-pe-free-download-android_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/hack-download_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/how-to-hack-and-get-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_003_off000049a2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49A2 24524 bytes
SHA-256: 6c27da2e2eba032ee6ed12332e3d12013066309c8d0447676bc48f667ac0b02d
font_01_sfnt_off00008214.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8214 18040 bytes
SHA-256: 63f6a73c8fcac7a0296ba30c45c7d116406f1db46acc5b5307ffbf1c764f0ccd

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