Malicious PDF — malware analysis report

Static analysis result for SHA-256 f04155f5e5aaa586…

MALICIOUS

PDF

38.9 KB Created: 2021-05-15 22:32:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0011768e88ff81d8b0d0b611aae232a3 SHA-1: 5931e9645cdced771b44074c42dee29faac61258 SHA-256: f04155f5e5aaa5860d50f2843585b2a1b5697b51d8ee3df1a0abf1660be906e8
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for a "Coin Master Hack Software Download" and a prominent link directing users to a malicious URL. This indicates an attempt to trick users into visiting a site that likely hosts malware or phishing content. The PDF structure and embedded content are consistent with a malicious document designed for social engineering.

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-hack-software-download-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_off0000341e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x341E 24744 bytes
SHA-256: 676cbc25e110c8aa45693ef4d32e848b5265784fc57b3a87ea8b094b486361d2
font_01_sfnt_off00006cc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC4 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00007676.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7676 18296 bytes
SHA-256: 3143ab5b0b8bd46f2f01096e2844859efc454ac8790b82692dc64774662bc370

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