Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d68b293605781fd…

MALICIOUS

PDF

34.8 KB Created: 2021-06-29 19:23:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c507b575e44114c9ecd0d730d4d9e4de SHA-1: 588c4f0f1a78c915c32e1ddbfae8de4b08f6013e SHA-256: 4d68b293605781fddb8e25b371656fd37a24d6bd4eeb5e74fd3eb84da0476958
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and generators. The primary redirector identified is http://netcdn.co/app/431946152/roblox-hack-init-game-hack. While no scripts were extracted, the embedded URLs and heuristic firings strongly indicate a social engineering lure designed to lead users to potentially harmful content or further malicious downloads.

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/roblox-hack-init-game-hack In PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/download-coin-master-apk-hacked_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-game-free-download-for-pc_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/vip-server-free-roblox_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/hack-videojuego-roblox_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-cheat-engine-download-for-mac_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-hack-any-tycoon-game-roblox_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-25-dollar-roblox-card_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/freespinandcoin_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-counter-for-roblox-apk_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-get-free-followers-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-get-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-cheat-2021_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-free-play-unblocked_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-hack-someone-on-roblox-like-anonymous_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-cape-roblox_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-for-all-even-noobs_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_off00002fed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FED 22820 bytes
SHA-256: dfd24d583f5ed6a4bcfc115013cfeb64199aaea6b5e8cfcffa8b5e216ac7d4d8
font_01_sfnt_off0000635b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x635B 18880 bytes
SHA-256: 5d215898a744a9fb31f0f3a8b5a483f296e38ec9ffca1f4bdb39877cb60a423a

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