Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ea263133a0c48e3…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 17:13:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 1af29e2d7fc05b29c1df2767f52e50a3 SHA-1: eccffdb3442abcad5228cb67a060a81d1df36d8f SHA-256: 5ea263133a0c48e3728edd3ff059d80fbbdbc0b96302f749f7f841a30fbd5c08
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-risk heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The document body and embedded URLs reinforce this lure by referencing game hacks and generators. While no scripts were extracted, the primary attack vector appears to be social engineering via a deceptive link.

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/open-coin-master-game-hack PDF link annotation
    • https://elibrary.ikhac.ac.id/repository/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-redeem-codes-generator_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/hack-prison-life-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/static-moonactive-net-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-free-executor_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-jailbreak-cheat-engine-money-hack_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-rpg-games-to-steal-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-whatever-floats-your-boat-level-hack_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-stuff-on-roblox-on-a-phone_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/idle-animation-roblox-free_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-adopt-me-free-ride-potion_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/robux-gratis-sin-hacks-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-hack-roblox-for-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-all-games-hack_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-and-tix-website_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-robux-no-buying_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-sparkle-wings-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-real-hack-2021-quick_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
stream_002_off00003091.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3091 23152 bytes
SHA-256: eec5b4b85cc14d2c3fdd0b281e162e99d5ef022bd567b5983b650d89ae5e5f10
font_01_sfnt_off000064d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D8 18008 bytes
SHA-256: 01b2d26e5667a3b5a50f75626f975bd6982cd8afb945009ae254d5a27d36e96c

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