Malicious PDF — malware analysis report

Static analysis result for SHA-256 df17cf18ccae13bb…

MALICIOUS

PDF

43.7 KB Created: 2021-06-03 19:57:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: c6d53e7835acdfe59d6f4d10453494b4 SHA-1: abeb039f6c339363814a05e748cdd12151f1be3e SHA-256: df17cf18ccae13bb8d747227637429c9391c0de0f759937686f8f2b2144dba83
122 Risk Score

Malware Insights

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

This PDF document employs a fake CAPTCHA lure to trick users into clicking a link, which is a common social engineering tactic. The linked URL promises a "Roblox Robux Hack Generator", further reinforcing the deceptive nature of the lure. The document's content and the presence of external links suggest an attempt to redirect users to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/roblox-robux-hack-generator-game-hack PDF link annotation
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-heaven_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/coin-free-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/coin-master-unlimited-spin-hack-mod-apk_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/free-robux-no-password_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/minecraft-xbox-free_GM479516143.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/free-minecraft-website_GM479516143.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/pokemon-go-free-remote-raid-pass_GM1094591345.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/free-unlimited-coin-master-online-tool_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/free-roblox-followers_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/how-do-you-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/robux-place-rewards_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/robloxhacks_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn5sumedang.sch.id/__statics/gudangsoal/files/coin-master-hack-no-root_GM406889139.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_off0000509f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x509F 24040 bytes
SHA-256: bfd308590f4831bc98574b13e1669408a335ecc8a5b4fbd95c6856835223df38
font_01_sfnt_off00008770.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8770 18428 bytes
SHA-256: bdac85b283ea9edec09d9f64e9cfc1f18bf7d6a92d05f58e23f3db2f02fbf028

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