Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c5dbecc40aaddb0…

MALICIOUS

PDF

36.0 KB Created: 2021-07-05 23:14:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: e3184fc3a29834e03195ebb11dbbae04 SHA-1: ed916a98a75655d2e3c7d28a5cca1247394d083b SHA-256: 1c5dbecc40aaddb0abb9eae12d758ee11e12d4ed27d2544786a0eb4ba6a896a0
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document employs a common lure of "game hacks" and "free generators" to entice users to click on malicious links. The presence of a "password-protected archive handoff" heuristic suggests the user is expected to download a password-protected file, likely containing a secondary payload. The primary malicious URL identified is http://netcdn.tw/app/479516143/minecraft-hacked-client-18-game-hack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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 http://netcdn.tw/app/479516143/minecraft-hacked-client-18-game-hack PDF link annotation
    • https://library.elkatarie.ac.id/repository/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-hack-account-bugmenot-wiki_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-roblox-exploit-11-19-16_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-do-hacks-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-hack-the-powerplant-inside-roblox_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-robux-roblox-online-generator_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/redline-cheat-roblox-download_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-free-wings_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/cheat-roblox-madcity-money_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-hack-me_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-get-free-robux-by-clicking_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-holy-sword-cheats_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/hack-roblox-using-command-prompt_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/5-sighns-that-u-have-been-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-robux-no-scam-no-password_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-robux-cards-no-verification_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-cheat-codes-for-dragon-ball-z-rage_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-cheat-engine-bypass-november-2021_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-coins-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/minecraft-pe-apk-free-download_GM479516143.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
font_00_sfnt_off0000364d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x364D 22696 bytes
SHA-256: a3802a709c5f4191144e119c7c1857b6683b1668a990b8b12080b76f07cdd577
font_01_sfnt_off0000692d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x692D 18588 bytes
SHA-256: 8e3a5c46349410794fd5c9c8edd28fb5e8e27dde13df1542e43e7e29ef6e05f6

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