Malicious PDF — malware analysis report

Static analysis result for SHA-256 99616f8e0e618a4b…

MALICIOUS

PDF

34.3 KB Created: 2021-06-30 03:41:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a793ecefc0f6681daf1b318bfa458ea2 SHA-1: 65fb2d10d17aacc84a9897f799d2b7f5b3f5808e SHA-256: 99616f8e0e618a4b483992bc18490b97142a24c5a7b0d0a6ec439a5193a1d894
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks. The document body and embedded URLs suggest a phishing or scam attempt related to popular online games. While no scripts were explicitly extracted, the nature of the links and the heuristic firings indicate a high likelihood of further malicious activity, such as downloading additional payloads or leading to credential harvesting pages.

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/what-is-the-best-hack-to-get-robux-game-hack In PDF document text
    • http://library.apsidoarjo.ac.id/repository/destruction-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-collect-today-free-spin_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-roblox-girl-hair-not-a-model_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-free-faces-on-roblox-november_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-apocalypse-rising-spawn-hack_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-500-free-spins_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-tix-and-robux-website_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/hacker-alert-roblox-id_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/hack-codes-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/daily-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-roblox-gear_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-purple-outfit-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-studio-free-download_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-spin-ml_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/rbl-gg-free-robux_GM431946152.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_off00003005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3005 21884 bytes
SHA-256: 95c34e8ea1d3bedcb7cad8491ac07e97ae6e9ca62548797943acb24137cc7a2a
font_01_sfnt_off000060b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B1 19188 bytes
SHA-256: 44e5594c6dea99373caa93480a9af2fcb6ddc3a7687847037761f9fb505cdcfb

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