Malicious PDF — malware analysis report

Static analysis result for SHA-256 148a1af436d70ecc…

MALICIOUS

PDF

33.7 KB Created: 2021-07-04 09:09:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 40c52d301b5689ade977ffea6738304c SHA-1: c4acab4c1bc1b0cf9c3d227c57999a38fbf1dc57 SHA-256: 148a1af436d70ecc02b054a3a863f8551a824a6bcfb4cd9a75c0adce6d22103c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links and embedded text that lure users with promises of game hacks and generators, specifically targeting Roblox. The primary malicious URL identified is http://netcdn.tw/app/431946152/hackear-server-roblox-game-hack, which likely serves as a redirector to a malicious payload or phishing page. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate a social engineering tactic to drive users to a compromised or malicious site.

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/hackear-server-roblox-game-hack PDF link annotation
    • http://digilib.ulm.ac.id/pusat/repository/play-this-game-for-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/minecraft-hacker-mask_GM479516143.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-hack-reddit_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/master-game_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-no-survey-and-humanvertifcation_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-free-group-funds_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/is-roblox-downloadable-on-ps4-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-hackers-list_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-skin-free-girl_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-builders-club-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/bit-slicer-roblox-all-hacks_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-verification_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-promo-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-free-spins-apk-2021_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
font_00_sfnt_off00002fa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA4 21920 bytes
SHA-256: 033f8c5073070b72116e96a48154eefa27b53e2c68f0843e123591295f49d288
font_01_sfnt_off00005fef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FEF 18584 bytes
SHA-256: dc3d27ff60225a50a5d968b9c885b02044d02fd460c9f5e530bf691e09b02f82

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