Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c05c17f393c6a73…

MALICIOUS

PDF

34.6 KB Created: 2021-07-08 22:50:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 6e0379a2865c085a099dc69f6e1491d4 SHA-1: fa1a7698e91aaf26747ce8ac59d2851d2a921e32 SHA-256: 9c05c17f393c6a73588187e1e1fa79cbc75006228d3b2f5fc1014801fd1a8044
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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/406889139/hack-spin-coin-master-game-hack PDF link annotation
    • http://perpus.smkn1pemangkat.sch.id/repository/coin-master-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/rewards-robux_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/freespinandcoinblogspotcom-2021-11-coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/minecraft-free-download-ipad_GM479516143.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/robux-generator_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/robux-hack-on-ipad_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/roblox-hacks-pc_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/pubg-uc-buy_GM1330123889.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/free-roblox-t-shird_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/create-free-account-roblox_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
stream_002_off00003168.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3168 22988 bytes
SHA-256: 7408c423a8dd3ec4bc40982a6b5a128a0f9efc2ca1128e5ed1c43f88dfdf028b
font_01_sfnt_off00006500.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6500 18180 bytes
SHA-256: 5cfedaf359300f2d78c418cab4259cb31a5fa1e14dd5a50147ba7c045b472e8a

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