Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a3e2704272a62e0…

MALICIOUS

PDF

34.3 KB Created: 2021-07-02 02:21:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 49c1798bf1c68f74a4a3c00c7fd0f1e3 SHA-1: c37b2ab67ab33eab3fe69e8ec8f1428c80c9cee8 SHA-256: 8a3e2704272a62e0b52371309f27f3399d1231ea83acacd192561904f421ba95
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free Robux and game hacks to entice users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, likely serving as a gateway to further malicious content or malware. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or social engineering attack.

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/free-robux-form-2021-game-hack In PDF document text
    • https://pustaka.mic.sch.id/repository/how-to-hack-roblox-ios-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/roblox-free-robux-that-work_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/100-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/free-2021-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/roblox-2-download-free_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/coin-master-hack-2021-link_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/how-to-hack-counter-blox-roblox-offensive_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/hack-roblox-2021-roblux_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/how-to-get-free-robux-using-free-codes_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/free-noob-clothes-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/change-your-roblox-name-for-free-reddit_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/how-to-be-a-hacker-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/how-to-get-250-million-robux-for-free_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/free-tiktok-followers-youtube_GM835599320.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/exploit-for-roblox-2021-cheat-engine_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

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_off00002ef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF8 22096 bytes
SHA-256: d7de1aae4b3cf7d988eb17f04e179dbafb5cbfe1bb73a868bcb4ae5909469da5
font_01_sfnt_off00006017.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6017 19380 bytes
SHA-256: 6fdd370bce9cfcc138e8c1f462a2c56a4d3aa57bd1c68532c04d17974eab026c

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