Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ff6ffcd13520282…

MALICIOUS

PDF

34.9 KB Created: 2021-07-04 15:16:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 702d7ef0c4937b4381065b8de9cbaac6 SHA-1: 4af6a901c781aba2c321d964ef4fbc3629ce31c6 SHA-256: 0ff6ffcd1352028289213a1fe31a2f790b631053001f56dca04d20201db9da50
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 0.9980

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 http://netcdn.tw/app/479516143/minecraft-ps4-code-free-game-hack PDF link annotation
    • https://katalog.smkn1glagah.sch.id/repository/free-download-mlg-roblox_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-free-spins-link-download-today_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-roblox-gift-crafts_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/today-coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/earn-robux_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-hack-badge_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-download-for-free-pc_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/anarchy-hack-roblox_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/smiling-girl-roblox-free_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-card-hack-app_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-coins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-get-2021-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-brown-pant-roblox_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_002_off00003227.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3227 22872 bytes
SHA-256: 40fb43705b1722662b02c4171aa54762aa68739c2afcb1ac52a1e7b71aa44c3a
font_01_sfnt_off0000657e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x657E 18388 bytes
SHA-256: f91d6cfcaf22a5cfd77e6411856631eeda4e5f2ba6a8e74a28f1cff138b8d002

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