Malicious PDF — malware analysis report

Static analysis result for SHA-256 911951f2c55a4c48…

MALICIOUS

PDF

35.0 KB Created: 2021-07-04 02:29:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 604b113bc8fddf52fcce6e44a9552ba3 SHA-1: 3ed6ad9371fbe2fe5036fc29468422af9edca5fb SHA-256: 911951f2c55a4c4863cd56c3ddb74de704fff9ea39df51c4464d146586947c65
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/free-spins-coin-master-hack-game-hack PDF link annotation
    • http://fkunismuh.org/perpustakaan//repository/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-daily-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/minecraft-login-free_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/kachifpro_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-free-master_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/join-this-roblox-group-for-robux-free-london_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/gain-robux_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-online-hack-link_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/how-can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-hack-any-tycoon-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-roblox-com_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/youtube-free-build-roblox_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-roblox-lua-scripts_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-to-get-robux-from-3-invites-free-nitro_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-hack-apk-online_GM406889139.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
stream_002_off000031e1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31E1 23176 bytes
SHA-256: 8b55f2a594e17d04f17dbb584ade89b07f7342d1ef2ff15cdf5b6470cba30035
font_01_sfnt_off00006605.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6605 18344 bytes
SHA-256: 8bc6b0cf0eb90f04f987a5ab4f1c5f134b3d28bd64dbb5f1502a7b5244b21d6b

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