Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e16e3696a17e812…

MALICIOUS

PDF

45.4 KB Created: 2021-05-11 12:46:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 13d775162da3362df43a1aa84575419d SHA-1: 55c0fbed7802334786d052733dc500bcb013de96 SHA-256: 0e16e3696a17e8123ff8e7be6430d1886204bfccdb097e8d01be9b5bd8de60b5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a game hack generator lure. The primary URL, https://netcdn.xyz/app/406889139/open-coin-master-game-hack, is likely a redirector to a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or social engineering attempt to trick users into visiting a compromised site, potentially for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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.xyz/app/406889139/open-coin-master-game-hack PDF link annotation
    • http://pustakafpsi.uin-suska.ac.id//repository/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/free-spins-coin-master-site-wwwquoracom_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/wurst-client_GM479516143.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/minecraft-noob-vs-pro-vs-hacker_GM479516143.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/fan-page-coin-master_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/games-that-can-be-hacked_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/how-many-free-spin-links-is-there-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b0c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B0C 26028 bytes
SHA-256: a93f07cba01a16cf8500f08fc01211836a23a69fbc41e0d104b315234514a636
font_01_sfnt_off000085ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85AD 3204 bytes
SHA-256: 8c2546387700f45186c395d475006178ee984eabbc175bcf1ee6eb58ba8b57aa
font_02_sfnt_off000090b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90B0 17724 bytes
SHA-256: 50fa6083fcbea3c37b42e9adc6f7c49d783d65341cfa8b80ae78b0fdb62cf2e6

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