Malicious PDF — malware analysis report

Static analysis result for SHA-256 d922f48554e01496…

MALICIOUS

PDF

38.2 KB Created: 2021-05-12 00:45:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6eaa00a405ab998ec2c2337a7df6107d SHA-1: fa3efdec531bc26d5626127056bc5dbd01cf2a53 SHA-256: d922f48554e01496582850cff64f1ce33804a54e886bbb9adbc866bfc1b5c272
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to a 'free generator / game hack' lure. The document body, though heavily obfuscated, contains text related to 'Free Shields Coin Master' and a call to action to 'CLICK HERE TO ACCESS COIN MASTER GENERATOR', reinforcing the lure. The embedded URL leads to known malicious infrastructure, indicating the primary purpose is to redirect users to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0126

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-shields-coin-master-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_off00003287.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3287 24352 bytes
SHA-256: e4ecf3b77b5a7ce67487c79ef2ddf4e46595b2f1a6282b0a79df9e7f47189d1b
font_01_sfnt_off00006a93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A93 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off0000747d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x747D 18124 bytes
SHA-256: e085952d3720952a51e878c41e5b5c7a5f24b6488949d11870729d067ad6b009

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