Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8d9dbcfb99d1554…

MALICIOUS

PDF

44.7 KB Created: 2021-05-16 19:00:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d791d49655f873a2936f5809a1415e4d SHA-1: 481ca2ffa9c871b6d4078c273754994bc2b36fdb SHA-256: c8d9dbcfb99d155429641f641b98398e93e4de4eecb7ca00580140baf46135a6
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a critical heuristic firing for a game hack lure, directing users to a known malicious redirector URL. The document body and embedded artifacts suggest a deceptive lure for a "Coin Master" generator. While no scripts were explicitly extracted, the PDF structure and the nature of the lure imply an attempt to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

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/haktuts-coin-master-free-daily-spins-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_off0000328a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x328A 25124 bytes
SHA-256: fe0fa0c90b79e63e1f3f87ac3e76d523faeae29582c19dd40d413ece7a88f16d
font_01_sfnt_off00006c7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7E 3440 bytes
SHA-256: b8401986b530bb748715f403a036b6408862a720222eb6968fe21524df2dedac
font_02_sfnt_off000077e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77E1 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_03_sfnt_off00008c6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C6C 18620 bytes
SHA-256: ded7de44f7a870837d4ef416985ae0b9ef78dce3540f45b1558d033e63b05ca7

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