Malicious PDF — malware analysis report

Static analysis result for SHA-256 6beee3eaf0e7f0e5…

MALICIOUS

PDF

37.7 KB Created: 2021-07-02 07:29:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: aaee7f39d0e1dbbc1daaeaa04da9eccb SHA-1: 1740480d12428120fcfeee713a6a7380a8c20eff SHA-256: 6beee3eaf0e7f0e5978dfa60372109055448ffbb8051c2e62cc167898580c75a
142 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to 'netcdn.co' and many hosted on 'library.itn.ac.id', all related to game hacks and generators. This indicates a lure to trick users into visiting potentially malicious sites. The heuristic firings confirm this is a link farm designed to redirect users, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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.co/app/431946152/all-game-pass-hack-roblox-game-hack PDF link annotation
    • https://library.itn.ac.id/perpusitn/repository/roblox-cheats-for-dead-rising-2_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-free-1m-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-hack-2021-free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-robux-aiden_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/v3rmillion-roblox-free-nuke_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/break-free-roblox-id-area_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hack-jailbreak-roblox-7-february-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-coins-link-2021-deutsch_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/bux-today-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-fix-cheat-engine-66-roblox-shutdown_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spins-link_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_off00003b6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B6E 22900 bytes
SHA-256: 92e200908d0d20707a4b8d42d6bad444afd0f0b33516c5edd9306392eaf76cc0
font_01_sfnt_off00006eac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAC 19072 bytes
SHA-256: 9e6d43e1c06f9fc560a6a687794daf2ccc8ab4a060caa16b3bc0fb186757997a

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