Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e5d188cf908aaed…

MALICIOUS

PDF

35.9 KB Created: 2021-07-05 03:31:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 555c90adb5ffc44495b5f27db55914c5 SHA-1: 15789ff60fc4674e327e100d75b632b772428359 SHA-256: 2e5d188cf908aaed7f2a5fd5191c4015ede9ee349620a4ee5746719495d28668
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action phrase, directing users to websites that promise free in-game currency or hacks. The primary lure URL is http://netcdn.tw/app/431946152/free-ways-to-get-robux-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a social engineering tactic to redirect users to potentially malicious sites, likely for credential harvesting or malware distribution.

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/431946152/free-ways-to-get-robux-game-hack PDF link annotation
    • http://library.ulb.ac.id//repository/free-robux-today_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-coin-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-rocitizens-money-hack_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-fog-remove-hack_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-free-obc-and-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/download-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/how-to-make-your-own-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-summer-event-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-hack-prohosts-org_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-codes-not-used-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/2021-no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/roblox-inappropriate-games_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-minecraft-skins-xbox-one_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/application-pour-hack-sur-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/roblox-lawsuit_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-a_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/check-cashed-v3-beta-free-download-roblox_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_off000032dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32DC 23096 bytes
SHA-256: 4ffb166737d52329cbed72c9b29cd665c902e8e7251685ded5ffe048351b9c7d
font_01_sfnt_off000066a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66A2 19196 bytes
SHA-256: 6d1a8e159d4bd9e74ccf1bcc836087e45007e7eb4657c84ad7a15bd0161a0a92

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