Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c62f8837ce03fb6…

MALICIOUS

PDF

34.5 KB Created: 2021-06-19 18:39:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b9b178f803001cb846097e02f49df741 SHA-1: 0444291c1e9c2b4074685e2a0292821ec6c8f815 SHA-256: 6c62f8837ce03fb61a21219f853f0bb824a8935314fcc8ab434a6a18cf535e75
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector infrastructure, specifically advertising 'game hacks' and 'free generators' for popular games. The document body and embedded URLs reinforce this lure, aiming to trick users into visiting the malicious site. While no scripts were directly extracted, the PDF structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

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-jailbreak-cheat-engine-codes-game-hack In PDF document text
    • https://library.iuli.ac.id/repository/free-robux-android_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-60-spins_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/robux-hack-code-in-inspect-element_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/pokemon-go-free-bot_GM1094591345.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-hack-without-verification-or-downloading-apps_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/descargar-hack-deathrun-roblox-super-speed_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-cheat-robux_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-no-survery-robux_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-minecraft-shaders_GM479516143.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-coin-spin-daily-link-net_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-get-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-roblox-avatar-items_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FCE 22040 bytes
SHA-256: 6153a3ec671c4c4cdb02f9a52d29a1fd4519114c1b7f7aedc4c1cbdf919a5753
font_01_sfnt_off000060a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A2 19384 bytes
SHA-256: 38ecd2ce835822b7effcf7d90e6f3294c639fbeff179b25adcb94368ba0aa2ee

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