Malicious PDF — malware analysis report

Static analysis result for SHA-256 e27e43a3345b0f3e…

MALICIOUS

PDF

46.6 KB Created: 2021-06-10 22:36:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: fdf452930b58ed4442d80677bff1cd78 SHA-1: 20c0138e390da34ca30ec244287c12df723307b8 SHA-256: e27e43a3345b0f3e8ac38cae9729354d862584634bf58fe0fc8f4dfdd220acc4
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 0.9832

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 https://netcdn.tw/app/431946152/free-alt-accounts-roblox-game-hack PDF link annotation
    • http://fkunismuh.org/perpustakaan/repository/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-robux-ipad-2021_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/pastebin-roblox-free-robux-real_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-minecraft-printables-food-labels_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/robux-generator-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/www-robux-redeem_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/my-roblox-gf-cheated-on-me_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/pokemon-go-free-hack_GM1094591345.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/vip-roblox-free_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/reddit-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/pokemon-go-free-647_GM1094591345.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-free-codes_GM406889139.pdfIn PDF document text
    • https://rblx.landIn 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_004_off000052dd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52DD 29036 bytes
SHA-256: a14f278afe408e65aa37c5938c4b7b7a27ceb8034b46ce4bd2b8ce0076db045b
font_01_sfnt_off000093d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93D1 18192 bytes
SHA-256: da9216f33c705cf1cb558e36217bf500f5d1073324c4df553b885be53ca13965

Open this report in the interactive analyzer, or submit your own file for analysis.