Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b65ff941f346039…

MALICIOUS

PDF

48.0 KB Created: 2021-06-03 22:02:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: af0ef032416fae052b37c5169916d718 SHA-1: 718f6a01a8e6f4e8d9f568185ec2886a45edc1b4 SHA-256: 2b65ff941f34603915875d6d70292f00bfe6846467d28d38a9b7ab59040acfe6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains embedded URLs and a visual call-to-action, strongly suggesting a lure for users to download further malicious content. The ML classifier also flagged this PDF as malicious with high confidence. The primary URL points to a resource promising free game passes for Roblox, a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.online/app/431946152/how-to-get-free-gamepass-on-roblox-game-hack In PDF document text
    • http://www.js100.com/uploads/ckeditor/files/fb-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-20-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-robux-download_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/roblox-free-body_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/pubg-700-uc_GM1330123889.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-free-account_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-free-coins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-robux-images_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-free-spins-activegamer_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-tiktok-followers-no-human-verification_GM835599320.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-apk-free-download_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-attack-block-hack_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050fc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50FC 25492 bytes
SHA-256: 69792ba958b52f130501932ae374dfc4730ff1736e3daf64841b8f03ca677524
font_01_sfnt_off00008a7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A7C 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off00009724.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9724 18880 bytes
SHA-256: fb511527e7af6e663a1f7c37f4b3a79e8b469c753c7cbc9de226132a948228f9

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