Malicious PDF — malware analysis report

Static analysis result for SHA-256 4453457a806b8a59…

MALICIOUS

PDF

39.0 KB Created: 2021-05-12 10:40:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-12
MD5: 444b167b168b85b203f5cbcec5259049 SHA-1: f0fc9a070b5642c38a64a1514ac1b696e1e78a37 SHA-256: 4453457a806b8a592d3d24a013ec9bc010c691a77289a9b0680a5d049e339d94
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to a redirector URL associated with game hack lures, indicating a phishing attempt to trick users into visiting malicious sites. The document body explicitly mentions 'Como Hackear Coin Master' and includes a call to action to access a generator, reinforcing the phishing pretext. The presence of embedded URLs and the nature of the lure suggest an attempt to deliver a second-stage payload or lead the user to a compromised site.

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/como-hackear-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_off00003292.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3292 26208 bytes
SHA-256: d3b5fe297755d660fcae45cba3e38a59974f72c2961b7a5b6210adf3484b027a
font_01_sfnt_off00006e17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E17 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000077c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77C9 17976 bytes
SHA-256: 40dd236b971f40dc9e773aba28db4bcf9d666fe41fb73238afdc269e45a8876b

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