Malicious PDF — malware analysis report

Static analysis result for SHA-256 0274dfce52f7585d…

MALICIOUS

PDF

43.0 KB Created: 2021-06-14 01:16:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 7c2668a258d10e242259276ff2a3a2e9 SHA-1: daa3ef94a2b8b08127f9708bb90542f1da713089 SHA-256: 0274dfce52f7585d79e17f3c425b3368ab6d52f4f409215b60a56f8b335a88f4
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 0.9971

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.co/app/431946152/bloxland-earn-free-robux-game-hack PDF link annotation
    • https://opac.itp.ac.id/repository/jailbreak-script_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/play-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/pig-master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-robux-no-rewards_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/oprewards-com-robux_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-hack-legends-of-speed-in-roblox_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-free-pet-food_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-account-hacker-tool-2021_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/get-robux-today_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-get-free-spins-on-coin-master-android_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-free-spins-1701-20_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_003_off00004751.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4751 26196 bytes
SHA-256: fc8b7c29b04fe329e96c1401e8197c8fcec46716e54c90ba8924a9fd7dcd5783
font_01_sfnt_off0000845e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x845E 18676 bytes
SHA-256: 16ce864fe1b7d103649bad00073a9b8316887ee8a27c2b6e7e5a10926c8c67c9

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