Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac491ad556b50053…

MALICIOUS

PDF

42.8 KB Created: 2021-05-15 06:45:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 553dd0b8adf87b158e002a4dbb90154b SHA-1: caf8639d48321ffeacf241747b0801d4e65c36e2 SHA-256: ac491ad556b500534515e8cd23e6ec02d4e9d762f436ba3809c61310666bcb3a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free game currency and hacks, directing users to a known malicious redirector. The document body contains obfuscated text and multiple URLs, including the primary malicious redirector. The presence of embedded URLs and the critical heuristic firings strongly indicate a phishing or scam attempt designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/robux-hack-no-human-verification-game-hack In PDF document text
    • https://www.arquetopia.org/images/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/static-moonactive-net_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-coins-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/como-hackear-coin-master-sin-verificacion-humana_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/roblox-com-r_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/cm-free-spins_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/se-puede-hackear-coin-master_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/hackear-coin-master-android_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/how-to-make-a-free-server-in-minecraft-java_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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_off000047df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47DF 25700 bytes
SHA-256: 4345217268f69b56c9428225a573b1740212e776835fe7c2db60d1e6e1e5c026
font_01_sfnt_off00008339.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8339 18868 bytes
SHA-256: 8c41f3ed2032476b4a245afad5cd23074bff3a00c17c7f8f9be8353034b253b9

Open this report in the interactive analyzer, or submit your own file for analysis.