Malicious PDF — malware analysis report

Static analysis result for SHA-256 3531e04f098459db…

MALICIOUS

PDF

34.0 KB Created: 2021-07-05 09:12:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 503c25683c624c8a7927207a7272b169 SHA-1: 59a1f79c08b1283976b098ae2b0ccbb0fbae6057 SHA-256: 3531e04f098459db4dba5e70fc259c433263304b3020a7ea0969b8ab4fbae3c2
122 Risk Score

Malware Insights

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

This PDF document employs a lure of game hacks and generators to entice users into clicking malicious links. The primary link, http://netcdn.tw/app/479516143/hacks-minecraft-game-hack, is associated with a high-severity heuristic for game hack redirects. The document body and numerous extracted URLs reinforce this theme, suggesting the intent is to lead users to potentially malicious websites for downloads or further phishing attempts. The presence of a 'password-protected archive' lure heuristic indicates a common tactic to bypass security scanning.

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/hacks-minecraft-game-hack PDF link annotation
    • http://library.feb.unila.ac.id/rfeb/repository/robux-adder_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-hacks-no-downloading_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/cheat-jailbreak-rush-hacked-roblox_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/catalog-in-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/how-to-hack-someones-roblox-password_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-uncopylocked-roblox-games-meganz_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/velvet-twitter-feel-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/pastbin-robux-hacks-for-free_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-bloxburg-free-money_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/rbx-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/logiciel-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/minecraft-windows-10-edition-hacks_GM479516143.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/pokemon-go-free-game-download_GM1094591345.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/tiktok-free-online-books_GM835599320.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-robux-pin-codes_GM431946152.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_off0000315f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x315F 22420 bytes
SHA-256: ec766e8eef0fd05e68dc51e1e04c343b0b5a420f90d71ce495fb149d38148871
font_01_sfnt_off0000634a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x634A 18024 bytes
SHA-256: a542bb80f6743a435cc01bd2774b3690020f3f79aba497daee1fa0f418e1828b

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