Malicious PDF — malware analysis report

Static analysis result for SHA-256 be76fae1199b71e3…

MALICIOUS

PDF

38.4 KB Created: 2021-05-17 23:30:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b19dcbfafc0783b45ceca75271148895 SHA-1: 7b646db8337cf77d7d2058d3fd7b1f948a0e7fdb SHA-256: be76fae1199b71e3ba83d8f3400496e697256dba0909fbf98a26b799562ae7cc
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a known malicious URL, masquerading as a "free generator / game hack". The heuristic firings indicate the PDF is designed to lure users into clicking these malicious links. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to deliver a malicious payload or redirect to a phishing site.

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/free-robux-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_off00003329.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3329 23952 bytes
SHA-256: 9b6ee5ac5f6f81e7d1099ebfc04cbf73d0e647e2394f785399ab024c37ad9e62
font_01_sfnt_off00006a0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A0F 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off0000741f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x741F 18416 bytes
SHA-256: a2c808792aaeb1607b9c3a91ae122c662faffffe8d42f3cf4118be6ccc5b3e7b