Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2de8565c3b8afc3…

MALICIOUS

PDF

33.4 KB Created: 2021-07-20 05:44:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: c3a888e749394e2c1fa1ca4f4da958ad SHA-1: a993eb490f5ded617cc976d2084db90cae697453 SHA-256: e2de8565c3b8afc3a32a788f1b583ce3e333f0a629b750db2fc5a8e38f8e7ad7
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 0.9942

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/free-spins-for-coin-master-game-hack PDF link annotation
    • https://amozeshportal.ir/assets/uploads/pages/files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-tiktok-likes-trial_GM835599320.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/tiktok-views-free_GM835599320.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-spin-coin-master-2021-link_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
stream_002_off00002cf7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2CF7 23396 bytes
SHA-256: 48be96d512e60fafe8a048bd3fd18251a5542b5d471aee03dc2772b8ac259a79
font_01_sfnt_off000061c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C8 17884 bytes
SHA-256: 7a686c540965cac69e1923dfbb6a78ce3f92ec60dbbf6836da21cbb58cd4d6cc

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