Malicious PDF — malware analysis report

Static analysis result for SHA-256 5124fe5fd0e7274d…

MALICIOUS

PDF

34.8 KB Created: 2021-07-04 01:52:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d5776b1f9145347cec109d2f3ad023f5 SHA-1: d9795608149908df9861c3709c8bb151dd97ec94 SHA-256: 5124fe5fd0e7274d4703a7f6ce4d04c489cbfec276af16e83bb23b0ab7afdf2e
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 0.9980

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/robux-hack-download-pc-2021-game-hack PDF link annotation
    • http://library.stipjakarta.ac.id/etd/repository/roblox-phantom-forces-xp-hack_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-free-app_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-get-free-robux-c_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-201-exploit-free-lvl7_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/cheating-on-roblox-girlfriend_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-do-i-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/coin-master-free-spin-software_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/lazyblocks-com-robux_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/guest-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/game-hunters-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-hack-the-cart-in-roblox-limber-ticoon_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-hacker-t-shirt_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-do-you-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/take-anyones-robux-hack-created-by-robuxian_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-hack-iphone_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-spins-coin-master-legit_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/guest-chat-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-magic-training-hack_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_off00002ff3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF3 22176 bytes
SHA-256: c9cf544561d70774d81c742f589ebd255aef744511e112ea2772c36d4efa89d7
font_01_sfnt_off00006120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6120 19672 bytes
SHA-256: ba8ff8d9b60d19f147eeea8ce88baff9562697ca3c0029709d9b851531c336e0

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