Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e78f11e8df36cb4…

MALICIOUS

PDF

39.7 KB Created: 2021-05-12 16:04:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3f0adb79d7a93b849e6bb8bc9654a95a SHA-1: 354bd5239beac86a5f83e5e0792a946669e951e7 SHA-256: 6e78f11e8df36cb4d9d79dadfd8b8971888d9fc22b04b56f8c728c19df715879
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically advertising a 'free Robux game hack'. The document body explicitly contains a call-to-action phrase 'CLICK HERE TO ACCESS ROBLOX GENERATOR', indicating a social engineering lure. The embedded URL is designed to trick users into downloading a potentially malicious payload.

Machine Learning

  • Nyx PDF Classifier clean score 0.0128

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-can-i-get-free-robux-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_off0000319a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x319A 26784 bytes
SHA-256: 3a3b98306115bb0551dd614f6e13acbcd53601c8130617c03d6b2eeb0a4fd9c7
font_01_sfnt_off00006ee5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE5 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off000078d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78D0 18512 bytes
SHA-256: 69cba7171cc96811b03769255314e8880e2b1f1f28661a6eda79c3c7ec8a929e

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