Malicious PDF — malware analysis report

Static analysis result for SHA-256 75772a60a548014d…

MALICIOUS

PDF

45.7 KB Created: 2021-06-03 12:18:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 655c058106cd9a8d11216f614fefc379 SHA-1: b7e5c5af1d0a4e828e120a7c310a1099e72bf34c SHA-256: 75772a60a548014de17b3b83ae72bc929fae1195c4fd2de8a0c19c69eaa549e1
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) lure. 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 0.9864

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/479516143/minecraft-free-ios-game-hack PDF link annotation
    • http://pustaka.mesin.ft.unand.ac.id/repository/hack-coin-master-app_GM406889139.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/how-do-make-a-robux-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/free-robux-real_GM431946152.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/coin-master-hack-using-cheat-engine_GM406889139.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/coin-master-hack-lost-world-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/coin-master-offline-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/minecraft-creative-mode-free_GM479516143.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/free-tiktok-bots_GM835599320.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • https://www.youtIn 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_off00005345.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5345 29660 bytes
SHA-256: c3295187f66e6542574bd4414ed4adc762a3437d4dc1d1ad4a5b036f29abf9c0
font_01_sfnt_off000091cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91CF 17712 bytes
SHA-256: 54d91aee1a0896e30cfb652b9b9fc91e7951cfaa65da7a48657c461bc2dd637d

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