Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbac69f82d245fd3…

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 19:42:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d6d9f5d6e006e15160bd75a680445b42 SHA-1: a7ff36ad3c00e4c6e562f4eb0dd9b14a1568a500 SHA-256: fbac69f82d245fd3fdaecddbe0188289dc2d870d38fb2fd065883c7bd8ed9c2a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' lure. The document body and extracted URLs reinforce this, pointing to sites offering 'free Robux' and game cheats. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site for potential malware download or credential harvesting.

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/431946152/free-robux-instantly-game-hack PDF link annotation
    • http://slims.abulyatama.ac.id/repository/advhaa-roblox-free_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-hack-free-eobux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-heaven-links-free-spins_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/kazok-how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/www-cheatsk-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-update-2021_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-cheat-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/robuxfree-con_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-roblox-hair-codes_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/game-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-robux-generator-no-human-verification-or-survey-2021_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
font_00_sfnt_off00002df4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DF4 22284 bytes
SHA-256: 3baae4d5cd1308ca3a20c8b1f99b330fb30704a178852f1c71bb4743adffe9ac
font_01_sfnt_off00005f62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F62 19072 bytes
SHA-256: 2ca9d11195de567abf4a703037006073732e9aee935d3c5754ca148439903055

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