Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ed1e37044c57af1…

MALICIOUS

PDF

39.4 KB Created: 2021-05-17 11:21:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 32db98d481ddc26965da906d33c37b27 SHA-1: 7b2c46afa29b3881a6855d471405f866ee485455 SHA-256: 5ed1e37044c57af1894b3baff4e099baeee764f9f5c61e46835493d321d2f83c
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game currency and a download button, directing users to a known malicious redirector URL. This suggests an attempt to trick users into visiting a malicious site, likely for further exploitation or malware delivery. No scripts were extracted from this sample, limiting the analysis of its execution flow.

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/link-for-free-spins-on-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_off0000353e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x353E 25040 bytes
SHA-256: 25decdb76b014ca59861a48f916d1298d94967aeafeec0210b59d8552fce2a76
font_01_sfnt_off00006f3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F3D 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00007928.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7928 18056 bytes
SHA-256: 722d781e478cd0d1a4785e673d05427d87221dd2f44d1d4595ffa323240eece4

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