Malicious PDF — malware analysis report

Static analysis result for SHA-256 75d106b997b50336…

MALICIOUS

PDF

34.5 KB Created: 2021-06-29 11:14:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-14
MD5: f755ee821a1d95bef1f3f8d893c9c848 SHA-1: 334beaa6179c67e89148280d64bd9f4f30af6b27 SHA-256: 75d106b997b503363defec1473c099a3ca8d1df1b40dbe86fbd35d65d404436e
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a critical heuristic firing for a game hack redirect lure, pointing to malicious infrastructure. The document body and embedded URLs reinforce this by advertising game hacks and generators. The presence of a password archive lure suggests the actual payload is likely encrypted, intended to bypass initial security checks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • 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
  • 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.co/app/431946152/hack-cruise-ship-tycoon-roblox-game-hack In PDF document text
    • https://library.iuli.ac.id/repository/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/earn-robux-websites_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/all-players-in-roblox-passwords-password-hack_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-ctrl-tp-hack_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/haw-to-get-free-items-in-roblox-taglog-2021-march_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/hacker-clothes-roblox_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-meme_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-daethrun-hollowenn-update-cheat_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/all-free-items-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-phantom-forces-hack-fr_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-do-you-hack-roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/redeem-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-free-spins-today-daily-links_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
font_00_sfnt_off00002fa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA2 22188 bytes
SHA-256: 5354fa6c960d19c2a19169f7f500a7e68cb3669f35c5894c5882ce73c9897c7e
font_01_sfnt_off000060cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60CD 19436 bytes
SHA-256: 488a11a8aa0fbcdf1b457230013b4b7250069cc6659a3a04e9aa2994afc59948

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