Malicious PDF — malware analysis report

Static analysis result for SHA-256 b48122001ff273ae…

MALICIOUS

PDF

34.5 KB Created: 2021-06-19 06:01:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c9febfd9478fb4e117130fb013f11c07 SHA-1: cba84cd4fafae5f77122195bb2e6c8d7b6c98d13 SHA-256: b48122001ff273ae2dcf947b9087adfd51a11ec26bfb2ef6b1da4f06a3d1a62e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and cheat codes to entice users to click on embedded links. The primary link, http://netcdn.co/app/431946152/cheat-codes-for-bank-tycoon-roblox-game-hack, is identified as a high-risk redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or malware distribution attempt, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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/cheat-codes-for-bank-tycoon-roblox-game-hack PDF link annotation
    • http://elib-s2.ubl.ac.id/repository/roblox-hack-999999-robux-android_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/redeem-code-roblox-free-2021_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-vip-gamepass-free_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-friends-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-roblox-exploits-2021_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/robux-generator-unlimited-hacks_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-get-free-robux-in-roblox-without-a-generator_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-and-easy-robux_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/farming-simulator-free-codes-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-hack-robux-with-inspect-element-2021_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-hack-roblox-accounts-to-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-field-of-battle-gold-hack_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/get-free-dominus-roblox_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_off00002ff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF9 21980 bytes
SHA-256: 795d80f3cebb98bad6d4c19e181cbe336b473d0df7fd6565581e01f83ebac2c8
font_01_sfnt_off000060b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B3 19444 bytes
SHA-256: 45843be7498ed3d5dde24dd6d01f77c8c21dca3da1e04c5a14bfe6da316694d6

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