Malicious PDF — malware analysis report

Static analysis result for SHA-256 c33d6df95b434931…

MALICIOUS

PDF

37.7 KB Created: 2021-05-21 11:01:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 75c01f92f91517467f0677266cbecf15 SHA-1: fb6aeff5310e435e563ccf41e13397e6418510b6 SHA-256: c33d6df95b4349313784f26ab39ddef9f4c4f99711ddbf77dcd318cd62ccd1f9
130 Risk Score

Malware Insights

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

The PDF file contains multiple links to a known malicious redirector infrastructure, specifically advertising a 'free Robux hack game hack'. The document body also contains a prominent call-to-action to 'CLICK HERE TO ACCESS ROBLOX GENERATOR', further reinforcing the lure. This pattern suggests the document is designed to trick users into downloading a malicious application or visiting a compromised site, likely for financial gain or further compromise.

Machine Learning

  • Nyx PDF Classifier clean score 0.0155

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-hack-game-hack In PDF document text
    • https://elearningma.ypi-islamiyah.sch.id/__statics/gudangsoal/files/minecraft-free-app_GM479516143.pdfIn 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_002_off00002c75.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2C75 24732 bytes
SHA-256: ff0ff7e444163923dba91e01abc6a142be873e5e62c56def37fe5ac01db33e41
font_01_sfnt_off00006515.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6515 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off000071bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71BD 18412 bytes
SHA-256: 8090616d8a5c0701bec53dfbbcc7430816d9db69864bd7c9067c717eb12c26b4

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