Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ad82e706c069b75…

MALICIOUS

PDF

48.8 KB Created: 2021-06-09 04:24:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 8540e80034d30cba26a1ee2fadd73bda SHA-1: c8321114b1e8985351a0187bb576541045912e6f SHA-256: 6ad82e706c069b75e702df5e890b88fc6cd6b76c39a54b0d21ad2987545e6d5c
200 Risk Score

Malware Insights

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

The PDF document employs a fake CAPTCHA lure to trick users into clicking a link. This link, disguised as a game hack generator, redirects to known malicious infrastructure. The document's content and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/how-to-get-infinite-health-in-roblox-with-cheat-engine-game-hack In PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-no-virus_GM431946152.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/coin-master-34-5-hack_GM406889139.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/roblox-jailbreak-hack-client-download-trackid-sp006-trackid-sp006_GM431946152.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/minecraft-free-install_GM479516143.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/free-spins-coin-master-app-iphone_GM406889139.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/free-roblox-followers-generator-2021_GM431946152.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/give-me-robux-now_GM431946152.pdfIn PDF document text
    • https://www.elearning.tawakkal.sch.id/__statics/gudangsoal/files/how-to-get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/robux-link_GM431946152.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/is-minecraft-vr-free_GM479516143.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/minecraft-pe-free-download-android_GM479516143.pdfIn PDF document text
    • https://www.elearning.tawakkal.sch.id/__statics/gudangsoal/files/free-tiktok-likes-trial_GM835599320.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/ultimate-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://elearning.tawakkal.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master_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_004_off0000585c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x585C 28056 bytes
SHA-256: 8e3d617a0deb43d8733fe06b626d9161f9813053ee01e6cd166b8e5b6ebd28ec
font_01_sfnt_off00009a0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A0E 19052 bytes
SHA-256: 53aea6113d6eb141ea4cc2e22a4f84b19211b292681415d344ca190693c49982

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