Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc67cdddeb726ad7…

MALICIOUS

PDF

44.4 KB Created: 2021-05-12 10:32:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 05c9665f8dcda03c807ff0f924c3fe72 SHA-1: a983a0f6245881ea197cbc79a5a62d63c9ac8dbf SHA-256: dc67cdddeb726ad7ea19c2c57101ff8a748f7f52df04b2cfe5ec3de8a58ea95e
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to a malicious URL. The document body and embedded artifacts also reference this URL, suggesting the primary intent is to trick users into visiting a site that likely hosts further malicious content or exploits. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier clean score 0.0119

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/coin-master-free-spin-and-coin-link-haktuts-hacking-news-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000341a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x341A 24628 bytes
SHA-256: 608a2e8f272cbf1e0c1a272a33563234ad782574b3f5e1ce21731c7563de705d
font_01_sfnt_off00006be5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE5 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00007591.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7591 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_03_sfnt_off00008a1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A1C 18824 bytes
SHA-256: ef8f09fc3c17cc4f26b4837a2aef37de344b1ca430b1a31f5cb27c991d5625de

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