Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7bb251ba86fbcd1…

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 17:42:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f94e6afd3ca24b386c86c2b9ba574d54 SHA-1: 80a18da360f15bdb6167a385ed14429d6654cb54 SHA-256: a7bb251ba86fbcd1d043f551200d0c011346851070b14a3e2407e877b488c4de
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a game hack lure to entice users to click on external links. The primary link, http://netcdn.tw/app/431946152/how-to-hack-roblox-accounts-game-hack, is a known redirector for malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a social engineering tactic to drive users to potentially malicious websites, likely for further exploitation or credential harvesting.

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/how-to-hack-roblox-accounts-game-hack PDF link annotation
    • http://digilib.unla.ac.id/repository/daily-coin-master-free_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/hacker-roblox-video_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/minecraft-pe-hack-client-2021_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/tps-new-tools-free-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-army-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/minecraft-hacker-mask_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-get-a-free-dominus-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/pubg-uc-20210_GM1330123889.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-game-free-download-for-pc_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-robux-pin-codes_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_off00002fca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FCA 21556 bytes
SHA-256: fa055d5400c29a91e4d62f924d0fe7cf2b7209ecef6bc1599d3cedf3abbb3dd3
font_01_sfnt_off00005f00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F00 19064 bytes
SHA-256: 8c571bf80081aaa5c2be303b8c9fe18b31c5334a74c17f7b55d65649f5ee093a

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