Malicious PDF — malware analysis report

Static analysis result for SHA-256 afe9a990b5bbb6ab…

MALICIOUS

PDF

33.3 KB Created: 2021-06-25 11:45:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 2c4f3f441a221fc38eb7f10c53229033 SHA-1: 09b4a38e52f1cbd44b49303a2cb7999d0901d651 SHA-256: afe9a990b5bbb6ab15c4301509ea1735a179d54c2a43936518c8abfa1255a671
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising 'free generator / game hack' lures. The primary malicious URL identified is http://netcdn.co/app/431946152/get-free-codes-roblox-game-hack. This pattern suggests a phishing or scam attempt designed to trick users into visiting potentially harmful sites.

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/get-free-codes-roblox-game-hack In PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/robux-hack-on-apple-computer_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-roblox-vip-super-power-training-sim-servers_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-rs-999-999-999-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/robux-free-co_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-robux-money-i_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-free-stuff-hack-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/cute-roblox-clothes-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/how-to-cheat-in-roblox-basewars_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-og-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-robux-us_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-robux-for-playing-games_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-lumber-tycoon-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/redeem-cards-for-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-synapse-exploit-free-cracked_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_off00002f66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F66 21200 bytes
SHA-256: bd28e38825228fdd1b8a60830257ce08799ff046e759917de3fc46447282bd3c
font_01_sfnt_off00005d21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D21 18928 bytes
SHA-256: d04b1686d0618584acd4e5e03cf12ad8ac4a56ceb1109d32ab1b885581fbc39b