Malicious PDF — malware analysis report

Static analysis result for SHA-256 98270417e28dd9be…

MALICIOUS

PDF

47.9 KB Created: 2021-05-12 20:51:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: d20e29cefc1c6dceb461d7e018904d81 SHA-1: 1264621b9970bb94271bf801f24a6be7deea9f1e SHA-256: 98270417e28dd9be4c081147b90a6cdaaa5f1367f2b230cd88387540234a4f37
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 0.9013

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-daily-bonus-game-hack PDF link annotation
    • https://unsla.uns.ac.id:443/pgsd/repository/is-free-robux-real_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/offers-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-free-spins-daily-link-game-mod_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-free-spin-link-new_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/master-coins-free_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/roblox-g_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-minecraft-server-maker_GM479516143.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-hack-unlimited-spins-apk-download_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-invite-friends-free-spins_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/minecraft-free-download-ios_GM479516143.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_off00004e86.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E86 27984 bytes
SHA-256: d2020106bdcaa9a51305cb5386cc6c72d8fd38aaa307ddedb7a11e784b61cbbd
font_01_sfnt_off00008efe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EFE 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000098af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98AF 18324 bytes
SHA-256: 49f584c02d5d185fccddb39f45d489986bed95ac7bc2f0da6bb6a0e76047048d

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