Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fb5a206b8ef75cf…

MALICIOUS

PDF

45.6 KB Created: 2021-05-16 00:32:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 5b2f621b9b1f049502e30410483aef91 SHA-1: f6358557f4ea8d3ae3c1fb177c53912c816c48fa SHA-256: 9fb5a206b8ef75cff047d5207280e673834eac3a832d577fe22e7b89af993da9
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 0.9507

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-spins-hack-game-hack PDF link annotation
    • http://daskrimti-jabar.web.id/library/repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-roblox-accounts-dantdm_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-heaven-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/roblox-executor-free_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/coin-master-free-download-for-pc_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/coin-master-free-spins-activegamer_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-2021_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/wizard-hacks_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-robux-only-1-step_GM431946152.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-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-hack-blog_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004870.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4870 30236 bytes
SHA-256: b11b121ba5bf0ddfcbd92b57611ce99fb1f74844cea9ef4b1248307f3acb727b
font_01_sfnt_off000085f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85F3 3000 bytes
SHA-256: 2dc442bec2876772b2b8d4b50a4abf064217aa7912c99c219d8694ed3db7bda1
font_02_sfnt_off00009053.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9053 18056 bytes
SHA-256: 5bc30252b20e252a4e4f12754ee6fd7a8bdc905346c0352a18cf9aa56584dd16

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