Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb279579a21a41d3…

MALICIOUS

PDF

34.9 KB Created: 2021-06-18 04:27:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: bb1fd84e5ac5776a01221da8a4966246 SHA-1: 1aeab83dfd7eebb3d02a35b3f0428d6068aa7cee SHA-256: fb279579a21a41d33591257701b71a711ab539d692c488818214bafb4c6b875e
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.co/app/431946152/hacker-destroza-la-ciudad-roblox-pokemon-gomiannn-game-hack PDF link annotation
    • http://repository.unla.ac.id/repository/coin-master-hack-tool-v1-9-download_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/script-executor-roblox-free_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/hack-sentences-in-roblox_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/easy-way-to-get-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/dominus-infernus-free-that-cost-1-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-adopt-me-pet-hacks_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/robux-earner_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-without-downloads-roblox-november-december-2021_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/moonactive-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/inappropriate-roblox-games-2021_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-how-to-get-free-clothes_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-redeem-code-free_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-tiradas-gratis_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F93 22216 bytes
SHA-256: 4ec694c7911316743e464b76afe51e426e275df3ea0e5307a262e3e08c781f96
font_01_sfnt_off0000611d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x611D 19860 bytes
SHA-256: dae6d13529a9f0ad99a8aac6b06898b9fddf4336cabc76726b6c159436099a1b

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