Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2e3c1c74a4366a9…

MALICIOUS

PDF

35.3 KB Created: 2021-05-13 03:30:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 64e479cab851ca24b0bcd2fd4ae08414 SHA-1: 2b9c479ed9a03604d45009f22b4c2b57688f81a8 SHA-256: e2e3c1c74a4366a9de3575489ba6805b1cf62ee31a3d1520b96d7d2b6ac198c2
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically advertising a "free Robux generator" or "game hack". The document body text and heuristic firings confirm this lure. The embedded URL is the primary indicator of malicious activity, likely leading to a further stage of compromise.

Machine Learning

  • Nyx PDF Classifier clean score 0.0306

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/431946152/free-robux-apk-game-hack In 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_003_off00003003.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3003 24572 bytes
SHA-256: dc272260e66e9264ed61b2d424168f785e718435fbc593f2f8c8f9f4c38f4cf5
font_01_sfnt_off0000686a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x686A 18360 bytes
SHA-256: e9359734bc9145e2b26d31ba7f580aebc3bf98c57002eb6e857d81b76a5cddb9

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