Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cd63abac31ab946…

MALICIOUS

PDF

38.6 KB Created: 2021-05-21 20:03:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cfbdb30151c360afbdca002a36ee4632 SHA-1: 45714d8e13e589b7b49c7951cecc3f8c721843bb SHA-256: 4cd63abac31ab94694727157594dc86147118ea17e464da93faeec8bef682582
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors, masquerading as game hacks or generators. The ML classifier also flagged this PDF as malicious. The embedded URLs suggest a phishing or scam attempt to trick users into downloading further malicious content or visiting compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9476

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/roblox-install-free-game-hack In PDF document text
    • http://svadba-moda.kg/images/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • http://svadba-moda.kg/images/free-tiktok-fans-app_GM835599320.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003033.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3033 29072 bytes
SHA-256: a3392d9753654628c80f870975a68ceba10fc58c7ff85b38efc5072ec93b04c0
font_01_sfnt_off00007591.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7591 18280 bytes
SHA-256: 3c3a3b9ea50be1288d4e90d28d6823d5d0e7fce454efe1523ba787caa6fa0fc3

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