Malicious PDF — malware analysis report

Static analysis result for SHA-256 5124fee2e02e592c…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 22:33:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: b8fbb1f0922954b99a09267df10f7f67 SHA-1: bbe4691f744744f8fdf1f15e22340dd50516355c SHA-256: 5124fee2e02e592cc1b2cddb48be6ad4e65cb7f21ba91e7219dc833101358e00
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/406889139/coin-master-free-spins-link-quora-game-hack PDF link annotation
    • http://lib.mappifhui.org/repository/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hack-scritp-inputter-for-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-hacks-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-2021-september_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/gain-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-old-avatar_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-my-hero-academia-online-quirk-hack_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-viking-quest-hack_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-spins-coin-master-2021-app_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-doge-hat-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/can-pokemon-go-free-remote-raid-pass_GM1094591345.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-jump-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-bee-swarm-simulator-script-hack_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-roblox-accounts-with-bc_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-spins-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
stream_002_off00002f1b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F1B 23232 bytes
SHA-256: 4e3b5549f07354c105853a2a873bfbe9ea88005be46e44c781ec2575bbbac907
font_01_sfnt_off000063ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63CA 18640 bytes
SHA-256: 854813a0d1d296087869f9650f2c8127593c4544be73c34457aa680c0b691141

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