Malicious PDF — malware analysis report

Static analysis result for SHA-256 c45cba4ffc2a1685…

MALICIOUS

PDF

49.1 KB Created: 2021-05-10 23:22:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 664a529e2eaf79bbbfd11fea5df1de25 SHA-1: d846e6d12c7d5c7b01db18240777de38ca884efa SHA-256: c45cba4ffc2a1685349f2aec32df3c604206c1f637e2db6528ad9ef8a4b7bf36
122 Risk Score

Malware Insights

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

This PDF document employs a game hack lure, specifically targeting Roblox and other games, to trick users into clicking a link. The document presents a fake CAPTCHA, a common social engineering tactic to coerce users into executing actions. The primary link, https://netcdn.xyz/app/431946152/roblox-cheat-robux-game-hack, likely leads to a malicious site or further download. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9228

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.xyz/app/431946152/roblox-cheat-robux-game-hack PDF link annotation
    • http://elearnig.mtsmiftahululumdero.com/__statics/gudangsoal/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://elearnig.mtsmiftahululumdero.com/__statics/gudangsoal/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://elearnig.mtsmiftahululumdero.com/__statics/gudangsoal/files/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • http://elearnig.mtsmiftahululumdero.com/__statics/gudangsoal/files/coin-master-32-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://elearnig.mtsmiftahululumdero.com/__statics/gudangsoal/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://elearnig.mtsmiftahululumdero.com/__statics/gudangsoal/files/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://elearnig.mtsmiftahululumdero.com/__statics/gudangsoal/files/coin-master-free-400-spin-link_GM406889139.pdfIn PDF document text
    • http://elearnig.mtsmiftahululumdero.com/__statics/gudangsoal/files/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://elearnig.mtsmiftahululumdero.com/__statics/gudangsoal/files/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://elearnig.mtsmiftahululumdero.com/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://elearnig.mtsmiftahululumdero.com/__statics/gudangsoal/files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://elearnig.mtsmiftahululumdero.com/__statics/gudangsoal/files/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://elearnig.mtsmiftahululumdero.com/__statics/gudangsoal/files/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • http://elearnig.mtsmiftahululumdero.com/__statics/gudangsoal/files/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • http://elearnig.mtsmiftahululumdero.com/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://elearnig.mtsmiftahululumdero.com/__statics/gudangsoal/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://elearnig.mtsmiftahululumdero.com/__statics/gudangsoal/files/roblox-robux_GM431946152.pdfIn PDF document text
    • http://elearnig.mtsmiftahululumdero.com/__statics/gudangsoal/files/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://elearnig.mtsmiftahululumdero.com/__statics/gudangsoal/files/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elearnig.mtsmiftahululumdero.com/__statics/gudangsoal/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004bdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BDB 31792 bytes
SHA-256: 56b9a88ad2b19058afaeb1556c02ab69848087c7a82c7378e0eb97ace778cfcb
font_01_sfnt_off00009074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9074 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00009d1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D1B 18424 bytes
SHA-256: a96f43e65daf9623fa7b9bc259dd656765653644365f0d7d49582fe5e9502473

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