Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bfec8ec67b6fbc8…

MALICIOUS

PDF

44.8 KB Created: 2021-06-03 23:38:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 6ff6f503b765306361deeb243298ed2e SHA-1: b182a81d440eb9750047a26ae0138a386625958f SHA-256: 2bfec8ec67b6fbc816a39d84b0e7bfaf7b9e271336ea2e26f8c9d013bf3c3ac1
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/431946152/free-gfx-roblox-game-hack PDF link annotation
    • http://e-library.smkn1jombang.sch.id/repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-spins-coin-master-without-completing-offers_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-tips_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/freerobux-co_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/roblox-fly-hack-no-virus_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-hack-root_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_off00004f4d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F4D 26924 bytes
SHA-256: 2fecd158bc2024a386d4e862a3e844d95cecdf2d5694b72e58f171aa535ffec8
font_01_sfnt_off00008dab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DAB 17948 bytes
SHA-256: 93c837e91696f9c750ee981a8553ec938bcc839a54d12736034a756f397dcd55

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