Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f5ce7e745b9be2d…

MALICIOUS

PDF

34.4 KB Created: 2021-05-25 07:04:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7db47ef51302b9ab32d937d776eeb2e1 SHA-1: 2c40661bfa9277e2bf6ba161f1bb7cb3fe58bfbd SHA-256: 1f5ce7e745b9be2d7a3350ba4f0e1e34b1f83747fc16e26a449c95afbe262e8f
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a lure for 'free Robux' or 'game hacks'. The document body and heuristics indicate a deceptive download button and a redirector link, suggesting a phishing or scam attempt. No scripts were extracted, but the primary malicious functionality appears to be the redirection to the malicious URL.

Machine Learning

  • Nyx PDF Classifier clean score 0.0718

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-no-human-verification-or-survey-2021-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_002_off00002abf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2ABF 24080 bytes
SHA-256: 3b57e6c0bfe73721d5190bce72a11221defb92cc197eb36b21011554801b1bd0
font_01_sfnt_off00006141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6141 19556 bytes
SHA-256: 08b2a18d96b3566ec838f0e87c4bb916e955b8f8af04b9064418114d078945b8

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