Malicious PDF — malware analysis report

Static analysis result for SHA-256 88d343380ebb8998…

MALICIOUS

PDF

44.3 KB Created: 2021-05-16 07:30:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f8764750989586c6c6496b339c3798e5 SHA-1: af62a2d25066ae73007d1a45eaaecbcfbad650be SHA-256: 88d343380ebb89981d0197d736f5bf17c5873a1fb14d96ecc22df54d5c9f8a83
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a critical heuristic firing for a game hack redirect lure, pointing to a known malicious URL. The document body, though heavily obfuscated, contains references to the same URL and appears to be designed to trick users into clicking it. The presence of embedded URLs and the nature of the lure suggest a phishing attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier clean score 0.0119

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/gamehunters-coin-master-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003383.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3383 27576 bytes
SHA-256: e990fc43496c3832496fdae7e7f42f7689864ec3cbce3a08b45029db3dd70282
font_01_sfnt_off0000727e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x727E 4828 bytes
SHA-256: 7a2d2b77e9c0f7e1a3494eb7b809a2901ab708b6610af51cfb6e991a7a82adcf
font_02_sfnt_off00008245.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8245 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off00008c35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C35 18112 bytes
SHA-256: c2ae28342630407017e32402e5197f88f475abc7b1f150f2e7ca71ade1f6ce7c

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