Malicious PDF — malware analysis report

Static analysis result for SHA-256 1df00cc6b5a3bd5d…

MALICIOUS

PDF

46.0 KB Created: 2021-06-03 12:27:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b76e20ae72f73f2a382f8ebae445d86e SHA-1: 102f56cf0957e6de05208a40d547a486a756a1ff SHA-256: 1df00cc6b5a3bd5dc5b3f90282ac56f72549a3099f9b3467d47090e4f1beed15
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a link to a "free generator / game hack" and displays a fake CAPTCHA to trick users into interacting with it. This suggests a social engineering attack aimed at driving traffic to malicious websites or potentially downloading further payloads. No scripts were extracted, but the presence of a fake CAPTCHA and a lure for game hacks points to a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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.online/app/431946152/how-to-get-free-robux-inspect-game-hack PDF link annotation
    • https://www.insol-europe.org/uploads/files/files/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/free-tiktok-video_GM835599320.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/coin-master-free-spins-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/robux-offer-wall_GM431946152.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/coin-master-key-free-spin_GM406889139.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/pubg-uc-low-price_GM1330123889.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/roblox-sexually_GM431946152.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/roblox-script-hacks_GM431946152.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/free-roblox-gift-card-codes-2021-unused_GM431946152.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/how-to-get-free-admin-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/minecraft-beta-free_GM479516143.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/free-coins-for-planet-master-game_GM406889139.pdfIn PDF document text
    • https://www.insol-europe.org/uploads/files/files/how-to-play-minecraft-with-friends-for-free_GM479516143.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_004_off00005450.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5450 26288 bytes
SHA-256: 2b01424a1c9f4658f394a33c90835fd1abb405abaf967c04ad8600af356ce3a4
font_01_sfnt_off000090a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90A5 18460 bytes
SHA-256: 22a12ce8296f83c6fe51ec3cff30028b7ec5cf0a22e0606da6e2b470e25d3737

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