Malicious PDF — malware analysis report

Static analysis result for SHA-256 b924b1904f4d6ebe…

MALICIOUS

PDF

35.3 KB Created: 2021-06-28 09:43:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 34ed681c9134e10ae31b16da78d63fcf SHA-1: 44f3bfec68aa4f1fbe67075ea7cd4cd816d5665e SHA-256: b924b1904f4d6ebe78e9327c1a8218a946ec677325374d4f9d7532a80f4c6433
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure, specifically targeting users interested in game hacks and free in-game currency for popular games like Roblox and Minecraft. The primary redirector URL, http://netcdn.co/app/431946152/como-ser-hacker-en-roblox-mad-city-game-hack, is flagged as malicious. The document body and embedded URLs suggest a lure for users to click through to potentially malicious websites, likely for phishing or malware distribution.

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/como-ser-hacker-en-roblox-mad-city-game-hack In PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/free-robux-no-apps-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/coin-free-spin_GM406889139.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/free-obc-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/pokemon-go-free-12k-eggs_GM1094591345.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/hack-coin-master-32-mod-apk_GM406889139.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/coin-master-free-stars_GM406889139.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/coin-master-card-link-free_GM406889139.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/roblox-workspacve-hacks_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/coin-master-hack-version-apk-download_GM406889139.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/hack-mod-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/rose-v1-download-roblox-hack_GM431946152.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_off0000309f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x309F 22704 bytes
SHA-256: 28b4624ffc0ed90062de04fae9c0a0f75eeee51cde120cb871a63678a59e5e0d
font_01_sfnt_off00006338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6338 19692 bytes
SHA-256: e1f1de819100db2f4f4b9ae053a6fb97d9f410f5c1ba3b86935f6783824ad5a2

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