Malicious PDF — malware analysis report

Static analysis result for SHA-256 a564503452265d82…

MALICIOUS

PDF

34.7 KB Created: 2021-05-21 23:15:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5f031be246f0055409c823e36f16820a SHA-1: 72c2fca4e04af26b48c9d7ce0b90bf18c6f2090e SHA-256: a564503452265d82155cbcb50066068bc9460dd553b3d59dbfd343e5457fc605
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors, disguised as game hacks and generators. The document body and heuristics indicate a lure to download or access these resources. While no scripts were explicitly extracted, the nature of the links suggests a potential for further malicious activity, such as downloading a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9508

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/free-coins-coin-master-2021-game-hack In PDF document text
    • http://badboybiteaway.de/images/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://badboybiteaway.de/images/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • http://badboybiteaway.de/images/coin-master-free-spins-and-coins-app-download_GM406889139.pdfIn PDF document text
    • http://badboybiteaway.de/images/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • http://badboybiteaway.de/images/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000031c1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31C1 23324 bytes
SHA-256: 0762d1f4523366d03e3cb0c377460fa2b2db5239e612099b1c4ef7bc996393fc
font_01_sfnt_off0000669f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x669F 18112 bytes
SHA-256: 0727bd4027d3f5eec951b181c2bc31ee4d98e10eed2c862aff41d240a04f60ea

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