Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d065797cb3f24f6…

MALICIOUS

PDF

39.6 KB Created: 2021-05-12 03:30:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e4ccc18f67baacc74e8512df5437f8bd SHA-1: 27becf10a985e51ec96e13425d0a55166d74e2f2 SHA-256: 8d065797cb3f24f645c06d3196ad4ae6db7d01a1a4625511e2b210fc95245a78
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple heuristics indicating it links to malicious redirector infrastructure, specifically promoting a 'Coin Master Free Cards Link Game Hack'. The embedded URL leads to a known malicious redirector, suggesting an attempt to trick users into visiting a compromised site or downloading further malware. No scripts were extracted, but the document's structure and embedded links strongly suggest a phishing or scam lure.

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/coin-master-free-cards-link-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_off00003641.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3641 25276 bytes
SHA-256: 0c0a8d93f826c3226945e43e6c13844e7524ae8fec9d443a2c2e242fe13ca0df
font_01_sfnt_off0000701f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x701F 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000079d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79D0 18056 bytes
SHA-256: 4c00fba11e6222d30ce91962ad0846eff86227a46da4e4704094e367f0981575

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