Malicious PDF — malware analysis report

Static analysis result for SHA-256 770cf17324890ccd…

MALICIOUS

PDF

39.7 KB Created: 2021-05-17 19:15:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d070ed8554d65c537e672a60dce76167 SHA-1: 7ce11119885a418f624f50f1c4780489da2d1109 SHA-256: 770cf17324890ccd69eb5504698e40c03b2da0787ec10d7c58cf55fe8b0a007a
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple heuristics indicating it links to malicious redirector infrastructure, specifically for a 'free generator / game hack' lure. The embedded URL directs to a known malicious domain, suggesting an attempt to lead the user to a phishing or malware distribution site. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier clean score 0.0128

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/406889139/free-spins-coin-master-2021-today-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003500.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3500 25068 bytes
SHA-256: 25f658b51311c7fd37b3610877a6f70e2d5e0aae2fc3dfb33a80fafb8a98e3fc
font_01_sfnt_off00006db6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB6 3124 bytes
SHA-256: 9967c6221325a4ff3f7c4336922605f990450164c2eee2df708cc81823c6ec98
font_02_sfnt_off00007895.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7895 18644 bytes
SHA-256: fb34871543d4e589edaa7b6b6daea61d4b413826d533968c66bf721badb2f47c

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