Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfe27dee9a8f4325…

MALICIOUS

PDF

46.3 KB Created: 2021-06-11 01:25:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: e8fb9fa1c0a5a450d3abedef49d38e4e SHA-1: 2475cf9741c845111c20ef1249c0f5f15e577e5e SHA-256: cfe27dee9a8f43253a28c8ca076e94b69728d874968114215d671c2422487041
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link to a "free generator / game hack" lure, indicating a social engineering attempt to trick users into visiting a malicious site. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to redirect users to potentially harmful content.

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/just-create-free-robux-game-hack PDF link annotation
    • http://reggieslockandkey.com/images/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-minecraft-thumbnails_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-hack-ban-roblox_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-free-spins-generator_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://reggieslockandkey.com/images/coin-master-gold-cards-free-link_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/como-atravesar-paredes-en-roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-pokemon-go-accounts-level-35_GM1094591345.pdfIn PDF document text
    • https://reggieslockandkey.com/images/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/work-at-pizza-place-roblox-hack_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/redeem-your-free-robux-at-http-get-robux-eu5-net_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/without-pokemon-go-free-evolution_GM1094591345.pdfIn PDF document text
    • https://reggieslockandkey.com/images/tiktok-free-folowers-jio-phone-install-tamil_GM835599320.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_004_off0000533d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x533D 27648 bytes
SHA-256: 7df66e6c8c908e9338879bd8b11160c0f285454cec1408c0592ba53a1b8f6d0d
font_01_sfnt_off000091f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91F1 18512 bytes
SHA-256: 643d26ee33f824ab9871d0c72241016299799bdbad03b8235823aefdc305fbce

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