Malicious PDF — malware analysis report

Static analysis result for SHA-256 888c5e64d3c8b8a7…

MALICIOUS

PDF

35.7 KB Created: 2021-06-18 16:51:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 362528db46b28962aa4cc2c7a77f0c19 SHA-1: 0855187b7cf451686500b126212b6acff685c15a SHA-256: 888c5e64d3c8b8a705a0e42efaf53b20db553a32992dd5305752ace1b486b372
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, including a known malicious redirector at http://netcdn.co/app/431946152/hacking-my-best-friends-roblox-account-game-hack. The document body and heuristics indicate a lure for 'game hacks' or 'free generators', suggesting the intent is to trick users into visiting these sites, likely to download further malware. No scripts were extracted from this sample.

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/hacking-my-best-friends-roblox-account-game-hack In PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/minecraft-free-demo_GM479516143.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-games-to-play-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-diamonds-for-royale-high-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/robux-free-c_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-launcher-hack_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/minecraft-apk-download-free-11-055_GM479516143.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-add-roblox-lua-to-cheat-engine_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-console-inspect-command-hack_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-bubble-gum-sim-free-pet_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-hack-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-bee-swarm-hack-for-treats_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/can-you-get-minecraft-for-free_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_off0000342d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x342D 21996 bytes
SHA-256: 08e8f56f6fec1fdbdbcd040b26ec8289d55120f4f81c2486ada75797f316655f
font_01_sfnt_off0000648c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x648C 19732 bytes
SHA-256: 9319d8bd19fb0eb8d084a16a83346a096d6e7a958a11427f25ed6f2ee61f5306

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