Malicious PDF — malware analysis report

Static analysis result for SHA-256 50714382d22d1cd5…

MALICIOUS

PDF

42.1 KB Created: 2021-05-14 18:04:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e6bb6589945a8825163467d73b7c6034 SHA-1: 993131d16f9858f67b1e3b78c121f37bbbfc7042 SHA-256: 50714382d22d1cd580c65badc5c68be754f8acfac714baf38faccc3d8bf3112d
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 0.9971

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/479516143/minecraft-reach-hack-game-hack PDF link annotation
    • http://forsan.edu.eg/images/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • http://forsan.edu.eg/images/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
    • http://forsan.edu.eg/images/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://forsan.edu.eg/images/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://forsan.edu.eg/images/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://forsan.edu.eg/images/coin-master-free-100-spin-link_GM406889139.pdfIn PDF document text
    • http://forsan.edu.eg/images/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://forsan.edu.eg/images/20210-free-spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://forsan.edu.eg/images/robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://forsan.edu.eg/images/how-to-get-free-roblox-hair_GM431946152.pdfIn PDF document text
    • http://forsan.edu.eg/images/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://forsan.edu.eg/images/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://forsan.edu.eg/images/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://forsan.edu.eg/images/free-minecraft-coins_GM479516143.pdfIn PDF document text
    • http://forsan.edu.eg/images/how-to-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://forsan.edu.eg/images/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://forsan.edu.eg/images/freespinandcoin-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://forsan.edu.eg/images/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://forsan.edu.eg/images/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://forsan.edu.eg/images/coin-master-free-spins-for-today_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_003_off00004a1e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A1E 25248 bytes
SHA-256: 548577f292cbf01afe134eb423b4f269429c1d5b3f65dc7cc03394979ac7cb6c
font_01_sfnt_off000083a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83A1 17904 bytes
SHA-256: 338e778c1ae38c15f57d68695408d0432531e6a93a33e2a2d7ec381387a6f025

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