Malicious PDF — malware analysis report

Static analysis result for SHA-256 992617a8804b623f…

MALICIOUS

PDF

34.0 KB Created: 2021-06-18 01:08:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f4c1ca46da1a37ccfec38827702a0617 SHA-1: 886a0f23f830c0da9a3c56f37c49f723ae5d5bed SHA-256: 992617a8804b623fca921604b8ce61b5316f7eb0376e4bc5e97d0c5e1aad46b0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded URLs that redirect to sites offering game hacks and generators, a common lure for malware distribution. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' specifically identifies this pattern. While no scripts were extracted, the document's primary function appears to be directing users to potentially malicious download sites.

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.co/app/431946152/free-zombie-roblox-game-hack PDF link annotation
    • http://lib.smklabor.sch.id/repository/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-any-roblox-item-for-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-tracker_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-free-clothes-in-catalog_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/5-get-unlimited-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/does-free-robux-work_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-quirks-in-boku-no-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/give-me-robux-now_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_off00002dd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DD2 22468 bytes
SHA-256: d21050286fc7ad27807b855148158565475e9630d8bb3f494e8908db158c1272
font_01_sfnt_off00005fd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD7 19124 bytes
SHA-256: 7b9afdde3c4ff48b0b3a874fa114050e6ce72d33c3a6426157e7d83cb3d7f224

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