Malicious PDF — malware analysis report

Static analysis result for SHA-256 38bb62bc1b008a7d…

MALICIOUS

PDF

44.2 KB Created: 2021-06-03 22:16:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 96ba61457ad22f684b7d5dad1ab22136 SHA-1: de8014c717060fd307f98d456010828f323dcaa4 SHA-256: 38bb62bc1b008a7d8b301a572ce96e318f8f04672cf3a108d7f8639b64c14745
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/coin-master-heaven-free-daily-spins-game-hack PDF link annotation
    • https://opac.umrah.ac.id/repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-coin-master-coins-2021_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-real-working_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-spin-appscoin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-hacks-no-human-verification_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-roblox-gear_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-tiktok-accounts-and-passwords_GM835599320.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-roblox-premium-for-free-2021_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_004_off0000506f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x506F 25476 bytes
SHA-256: 830a3a5b57117208139603c3f3b00e008488e6881f85f36a8cc921ff19aa6500
font_01_sfnt_off000089a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89A6 18420 bytes
SHA-256: 3ecb90ef472e5e2f59c65ed4968a9b56eea25dc0e2c6a87bd992ad99bf12be05

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