Malicious PDF — malware analysis report

Static analysis result for SHA-256 78025eb6f771c979…

MALICIOUS

PDF

42.1 KB Created: 2021-05-12 08:31:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 247f06adfff68854dfac9e107b1ed667 SHA-1: 3c97ecc3f54a7e936a568387c05cb04f4a7620b9 SHA-256: 78025eb6f771c9796402c99590dc1fceeb251cb191a340199e11bc6ab956c1e5
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple embedded links and a visual lure suggesting a 'Robux Hack Generator'. The primary link directs to a known malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a social engineering attempt to drive traffic to malicious sites, likely for further malware delivery or phishing.

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/robux-hack-generator-game-hack In PDF document text
    • https://krnl.rocksIn 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_off00003541.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3541 27696 bytes
SHA-256: 109f255ea0c330637064238fc2bcf821f210582663519cc51aa2e423daeb162d
font_01_sfnt_off00007618.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7618 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off000082c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82C0 18352 bytes
SHA-256: f5433ce3dc9930d213a8e7315569ee207b9df6dd56817c97a1fb358bc14a6a3b

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