Malicious PDF — malware analysis report

Static analysis result for SHA-256 89125f4878d09a4b…

MALICIOUS

PDF

34.6 KB Created: 2021-06-20 16:18:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 12dd4f8c56b91f5b1f39fcfa821503d9 SHA-1: 588b28c8cdef0342eb584be72369544327cd930f SHA-256: 89125f4878d09a4b25763f56d44478c179dcc36052dbab33784cdcccdc0fc40f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising free game currency and hacks. The document body and heuristics confirm a lure for 'free Robux' or game hacks, directing users to URLs like http://netcdn.co/app/431946152/how-to-get-free-robux-in-two-minutes-game-hack. This pattern is consistent with phishing or scam campaigns designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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/how-to-get-free-robux-in-two-minutes-game-hack In PDF document text
    • http://caraless.com/images/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/roblox-redeem-code-free-robux_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/roblox-hacks-no-virus_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://caraless.com/images/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/free-robux-code-inspect_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://caraless.com/images/cpbildco-robux_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/free-duolingo-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/how-to-hack-songs-in-roblox_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/minecraft-pe-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://caraless.com/images/free-game-pack-with-google-play-coin-master_GM406889139.pdfIn PDF document text
    • http://caraless.com/images/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/free-tiktok-fans-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
    • http://caraless.com/images/how-to-have-a-jetpack-on-my-character-free-roblox_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/roblox-vampire-hunters-2-noclip-hack-how-to-do-it_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/semi-transparent-pants-roblox-free_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/coin-master-free-spins-link-2021_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_off00002e8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E8A 22732 bytes
SHA-256: b90340c73c1c328dd99ad78b79ac0838a522cdf7dd63767ab23833fd75b58ba6
font_01_sfnt_off0000614c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x614C 19300 bytes
SHA-256: 8b002cf8aff75d04289672a55363aba6cde81ec92139a5465ba06306f22bc87d

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