Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ddd8ccf489e62cc…

MALICIOUS

PDF

32.0 KB Created: 2021-07-06 07:57:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e128e0b0c0bcb9bd835b01464f993256 SHA-1: 418b75fafe1479a9726aef711276a3a7cc66e1a5 SHA-256: 4ddd8ccf489e62cc88e80b43ed9e2f8a79b5d1b0b34b637559d4ca394c86a858
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 0.9824

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/1330123889/pubg-uc-carding-in-pakistan-game-hack PDF link annotation
    • http://perpus.masda.ac.id/repository/free-robux-website_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/robux-prices_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/costume-free-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-unlimited-spins-hack_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/20-roblox-card-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/guess-the-character-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-spins-coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-do-you-get-robux-5m-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-hack-assassin-boxes-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-roblox-new-hood_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-clothe-goku-ui-free-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-emojis-that-work-on-roblox-servers_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/tiktok-free-no-sign-in_GM835599320.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/games-like-roblox-but-better-and-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-fan-hack_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/cheats-for-city-architect-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_off00002706.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2706 22536 bytes
SHA-256: ec149826df6b8491d127d770a4dc5f59c906838c081c1871d1f3f66a9fd7b02b
font_01_sfnt_off0000596c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x596C 18692 bytes
SHA-256: 8569720b49cbcd6e480bc9218aa104f582f6773ec7a3ee8cbd3d8327409f79cd

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