Malicious PDF — malware analysis report

Static analysis result for SHA-256 013b63a4411afb32…

MALICIOUS

PDF

46.1 KB Created: 2021-06-09 08:56:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 41479c85c1ccc344e4168b3aa48c4535 SHA-1: 61a11b3e83da936bdff95e6f3bb3bfc46f619400 SHA-256: 013b63a4411afb321e2d2db4dffb7b0721f80ff0e2faadd2d08828059d5a8f93
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks, specifically for Roblox, directing users to a suspicious URL. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.tw/app/431946152/how-to-admin-hack-on-roblox-2021-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/roblox-executor-free-download_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/fake-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coinmaster-gps-user-review-coinmaster-coin-master-hack-pagedemo-index_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-spin-ml-link_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-getting-hacked_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-free-no-virus_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/wwwcoin-master-free-spincom_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/robuxmatchcon_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/latest-free-spin-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://direct-link.netIn 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_off00005062.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5062 27788 bytes
SHA-256: 334feecaa3c76cab94549dab5c5a5e9806d131d06b64aaec999449aa59bda25c
font_01_sfnt_off00008e4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E4C 19300 bytes
SHA-256: 79660737048cefe2ab51ecf056f09c2e56df99122b5a0252d7e91acff3569686

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