Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce64ba09dbb8a840…

MALICIOUS

PDF

39.0 KB Created: 2021-05-15 13:39:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ed2157193babb9f96ef2f3ee929acc76 SHA-1: 631559dfe04e946f875c6d03332004bee2e83bca SHA-256: ce64ba09dbb8a840d27af2dfe1c5a0ef0b33c6b1bb95712a9c015e2b25348ddf
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that are identified as malicious redirectors, specifically leading to a 'free generator / game hack' lure. The document body also contains the URL and a call-to-action phrase, indicating an attempt to trick the user into visiting a malicious site. No scripts were extracted, but the presence of malicious links strongly suggests a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0127

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/hack-coin-master-game-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_off000032ad.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32AD 25092 bytes
SHA-256: 65a0688302f1d78207d7c710b612c2e79758dd8f3fd0e686639ec4808071f9f0
font_01_sfnt_off00006c8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C8A 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off000077b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77B4 17976 bytes
SHA-256: 849fda9a27f10f21eac2a108988feb595c64d385794befb8f0e2a1653e8ad0ee

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