Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf82bae9d1428bd4…

MALICIOUS

PDF

38.9 KB Created: 2021-05-12 16:01:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 50ea45924e8f56224ad1c9553e44dee2 SHA-1: b77b2fd55ecad22c3200b21862cb765e285faa2e SHA-256: bf82bae9d1428bd4e87d91224f28f0d450daab84876f65a6b2088616fef53722
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a critical heuristic firing for a malicious redirector link, specifically a 'game hack' lure. The embedded URL, https://netcdn.xyz/app/406889139/can-i-hack-coin-master-with-lucky-patcher-game-hack, is associated with malicious redirector infrastructure. The document body also contains text and a call-to-action button related to accessing a 'Coin Master Generator', further supporting the lure. While no scripts were explicitly extracted, the PDF structure and embedded URL strongly suggest an attempt to trick the user into downloading a malicious payload.

Machine Learning

  • Nyx PDF Classifier clean score 0.0127

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/can-i-hack-coin-master-with-lucky-patcher-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_off00003213.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3213 25060 bytes
SHA-256: 37d2fdbe3ef6077eefa8a25ecd5d1c5e2a07a6ecec374f3544a694884ee351a4
font_01_sfnt_off00006ba3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA3 2944 bytes
SHA-256: e8dca988325d5b5adea380508eed68725fcb814536e93cd420f224b7166adc23
font_02_sfnt_off000075cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75CF 18552 bytes
SHA-256: 8be759f3e3349301e7dcc78824bb158111b4f4e5695afa9281379139d383196f

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