Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ca7db0468400445…

MALICIOUS

PDF

35.0 KB Created: 2021-07-04 08:05:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: aef520584ce8f129e328001e04ee2ece SHA-1: df1db7fb79744dec63a7d48981146b7deba89019 SHA-256: 5ca7db046840044524c10ef1f3e9f00d4ea72b3fb1b750c3ac242bf6e38b5ce8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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.tw/app/406889139/coin-master-hack-1021-game-hack PDF link annotation
    • http://library.stipjakarta.ac.id/etd/repository/how-to-get-free-robux-2021-mac_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-get-a-free-bighead-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/groups-that-give-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-hack-favorites-on-game-roblox_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-get-free-25-robux_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/guest-chat-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-card-redeems_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/why-isnt-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/hacking-tool-roblox_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/dantdm-roblox-free-account-pro_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/haktutsin-2021-09-coinmaster50freespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/pastebin-com-free-robux-promocode_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/cache-http-robuxiancom-howtogetfreerobuxv8_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-hack-that-realy-works_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-texture-packs-for-minecraft-pe_GM479516143.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_off000032ee.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32EE 22680 bytes
SHA-256: 82269164e6d6e7e65256b7556606118452ad5b1d32a9fb1db86503f9ada504c2
font_01_sfnt_off00006597.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6597 18408 bytes
SHA-256: bbde38aa9261b3681415098ebb56e64fed41e793e0f246cbe9fa73cc4ed2531e

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