Malicious PDF — malware analysis report

Static analysis result for SHA-256 79f940a9c5aafac3…

MALICIOUS

PDF

37.8 KB Created: 2021-05-14 18:12:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b4ab015822be4b31103405fbdc3503da SHA-1: 22246d946c7ee30b5fcac3d6ebf92f61ffbcb026 SHA-256: 79f940a9c5aafac348a9dc8fc883f41c4d559c1f9b1c1afae10e2e465799066f
138 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple heuristics indicating a lure for a game hack generator, which redirects to a malicious URL. The embedded URL 'https://netcdn.xyz/app/431946152/robux-no-human-verification-game-hack' is flagged as a malicious redirector. The document body and metadata also reference this lure, suggesting an attempt to trick users into visiting a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/robux-no-human-verification-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_off0000332d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x332D 27192 bytes
SHA-256: 60178fda1c4fcfdda799cc8847593d9082ff6144ca9797738677b71cbd51ef88
font_01_sfnt_off00007127.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7127 18696 bytes
SHA-256: b0b7efb10b2be72ca1f11f5058a16b7f706f868f5fc2e7590f71e4c885e22b6d