Malicious PDF — malware analysis report

Static analysis result for SHA-256 50673c340d642a88…

MALICIOUS

PDF

46.8 KB Created: 2021-06-03 20:29:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 4da01ec58b671c4127a27c3d1839fc39 SHA-1: af4e66d843887158f72ef51af76dbc89a0648df0 SHA-256: 50673c340d642a88cb0e54fabfca24c0d157946608b42115354c8f2fe1c4ac21
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 0.9832

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.online/app/431946152/rbl-gg-free-robux-game-hack PDF link annotation
    • http://pustaka.smpmuh2yk.sch.id/repository/roblox-imagine_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/can-you-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/coin-master-hacks-for-iphone_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/master-free-spin_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/win-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/robux-cheat_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/coin-master-game-download-free_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/mcpe-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/free-spins-for-coin-masters_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/robuxfree-con_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/coin-master-free-coins-cheat_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/coin-master-hacks-android_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/roblox-free-executor_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/facebook-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/extra-free-spins-for-coin-master_GM406889139.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_004_off00005161.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5161 30996 bytes
SHA-256: 102a27ad94c2d6ee1e0d2df09a98aa59dc41abcb7479054bd68b805646433e52
font_01_sfnt_off00009456.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9456 18376 bytes
SHA-256: 36d8e5c8df31ce5774558eb4dff236d908794f1052653b7bf9d7a2310610d2b4

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