Malicious PDF — malware analysis report

Static analysis result for SHA-256 44ac08d75766f229…

MALICIOUS

PDF

35.6 KB Created: 2021-07-03 13:44:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 36540f4374f893d962941aab94c58dd8 SHA-1: a77e5065eeee1f18f2c593d5b016715a8773418d SHA-256: 44ac08d75766f229403ebd3ae8c2c2ddff1408b3301a8b5d80643a6c7c168701
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/479516143/classic-minecraft-net-hacks-game-hack PDF link annotation
    • http://library.smpn2-byl.sch.id//repository/coin-mast-hacks_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-2021-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id/repository/roblox-crash-checked-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id/repository/zephplayz-free-robux-app_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id/repository/how-to-hack-people-one-roblox_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id/repository/drive-through-restaurant-tycoon-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/real-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id/repository/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/free-roblox-toy-codes_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-hack-mobile_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/regal-world-coin-master_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-hack-pc-2021_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_off000036b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36B6 22632 bytes
SHA-256: fcfcda139bc5a105c40ccaf2ecb4c758798a589b8baf82f6cb8f4e7915294bf2
font_01_sfnt_off00006971.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6971 18100 bytes
SHA-256: e5e43c4f2a76601b68ea8201b0c37883eedd9e77f9c7f84ae37ad33981ff38f3

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