Malicious PDF — malware analysis report

Static analysis result for SHA-256 33d3b832006e7a46…

MALICIOUS

PDF

36.4 KB Created: 2021-05-24 16:36:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 24377a9756f30b44bb0539bdae55d4f4 SHA-1: 718b4d33ab696f0b1fdda03d88f72c1761b19739 SHA-256: 33d3b832006e7a46f14221e6399a1dad8bf2dece7f36b78a926f3651965d3a53
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and text that promote a 'free generator / game hack' lure, directing users to a known malicious redirector. The document body explicitly contains the URL 'https://netcdn.xyz/app/431946152/free-robux-no-verification-2021-ios-game-hack' and a call to action to download a generator, which is a common social engineering tactic. The presence of multiple related PDF URLs suggests a campaign distributing similar lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/free-robux-no-verification-2021-ios-game-hack In PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-tiktok-followers-no-survey_GM835599320.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/real-minecraft-for-free_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_off00003256.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3256 24556 bytes
SHA-256: ce0776e8623e1c63141b1072b9cda8cc44f559644b157324d547f5acc133e3f9
font_01_sfnt_off00006a95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A95 19004 bytes
SHA-256: 57c461ba4099b7c3a729e07f809cac2bd0540fe115d61d2f21d5ca70446f19e8

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