Malicious PDF — malware analysis report

Static analysis result for SHA-256 353bf8f2dd63e084…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 09:54:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: fc71bfe1f8b149bf3248489d10cd4e7f SHA-1: d053ee4f9fcfde40253aab634a92c329e873334c SHA-256: 353bf8f2dd63e0842041a43f6c12ba3951493fb19d346226cbc1284f8a331140
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/406889139/coin-master-daily-link-game-hack PDF link annotation
    • http://laboratorium.sman2metro.sch.id//repository/coin-master-online-hack-2021_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/pubg-uc-2021_GM1330123889.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/how-to-get-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/minecraft-xbox-free_GM479516143.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/master-hack-coin_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/pubg-uc-kaise-khariden_GM1330123889.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/coin-master-deals_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/free-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000324b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x324B 22628 bytes
SHA-256: 2e5f20731c0f277e173881a1263c62b553888800734af9caa01610133beb2a79
font_01_sfnt_off000064ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64AB 18428 bytes
SHA-256: f6934a64d0d723b8392e8f0ad40bb3bb75b1001a66db8f267fb9679783ce483b

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