Malicious PDF — malware analysis report

Static analysis result for SHA-256 c53467ce86676965…

MALICIOUS

PDF

35.8 KB Created: 2021-06-30 11:01:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 30dbd9e08cbdfa6b375d5a60d1ce8729 SHA-1: f614b6bf9e0a5deb54c7c9b1748419ea7aa4c437 SHA-256: c53467ce86676965fce7b04b72b58846c99f5f6f280fd0f7505d43eebc6a7e8d
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.co/app/431946152/free-aand-true-ways-to-get-robux-windows-10-game-hack PDF link annotation
    • https://digilib.stikesindramayu.ac.id/repository/roblox-murder-mystery-2-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/robux-online_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/money-hack-ultimate-driving-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/how-to-add-mods-to-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/dead-mist-2-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/roblox-hack-exploit-project-pokemon_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/roblox-free-account-biz_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/pokemon-go-free-accounts-2021_GM1094591345.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-daily-bonus_GM406889139.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/earnbux-us-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/roblox-hair-for-free_GM431946152.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
font_00_sfnt_off00002ff1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF1 23220 bytes
SHA-256: 309662cc3b23b41700ca66526c8496e67ea414e340d73a574c225fa6b053f02f
font_01_sfnt_off00006434.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6434 19936 bytes
SHA-256: 8528254fb2da8e91e158b96d279d0bbc2d7f4954f965208d76208b3630491478

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