Malicious PDF — malware analysis report

Static analysis result for SHA-256 934b232e98b75f39…

MALICIOUS

PDF

41.5 KB Created: 2021-05-13 10:05:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5a29bc8fd58bf6b960a32bc65821680c SHA-1: 5874fad32173eaf5e6545706b5da25b0283032ad SHA-256: 934b232e98b75f39257f1fe343e33539d7a48ff58bb643fbb45216443b1e3259
130 Risk Score

Malware Insights

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

The PDF contains a lure for free Robux and game hacks, directing users to a known malicious redirector URL. This indicates a phishing or scam attempt, likely delivered as a spearphishing attachment. The PDF structure itself may exploit vulnerabilities to execute code, hence the inclusion of exploitation techniques.

Machine Learning

  • Nyx PDF Classifier clean score 0.0125

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/how-to-get-free-robux-no-human-verification-2021-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000034d2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34D2 26144 bytes
SHA-256: 50d65210407e272400582b3c4fdaa4075cd2fd6664b7afdcce64c39d317ab4ed
font_01_sfnt_off00007034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7034 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00007d45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D45 19428 bytes
SHA-256: dc7c459a90b1a398d2ee51f52972ed8a07904c77cd045887558a99bdb9823e3c

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