Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb15827b7c6abbc7…

MALICIOUS

PDF

33.4 KB Created: 2021-07-05 13:40:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 33e77ca2ef9d872dce2999dc43484db3 SHA-1: 79b6ff27e1d18d661655ac4884e5dc4f632d6c57 SHA-256: bb15827b7c6abbc7a8dc49f84beb8c779134e435ffbc20632f655bb05de81546
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 0.9980

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/roblox-help-free-robux-game-hack PDF link annotation
    • http://slims.abulyatama.ac.id//repository/robloxhacks_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/synapse-x-hack-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-free-items-hack-2021_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/hacking-robux-for-free_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-com-redeem_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/claim-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/create-own-free-skin-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/robux-premium_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-spin-coin-master-today_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/games-on-roblox-that-will-give-u-free-hat_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-hack-no-root_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/hack-to-get-levels-in-elemental-wars-on-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-hacks-for-windowns-10_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-heaven_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
font_00_sfnt_off00002d95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D95 21784 bytes
SHA-256: 2f6b97e1dd070faf1b99710a8eddbd61507a5de16865872a09142c8dc3a5193b
font_01_sfnt_off00005d9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D9B 18968 bytes
SHA-256: e6d3133e218776b7d87035f377c26f4245cc7a54287827524eb781a63c565006

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