Malicious PDF — malware analysis report

Static analysis result for SHA-256 2321e74d380748bd…

MALICIOUS

PDF

25.1 KB Created: 2021-07-03 14:04:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b09cf78228c39188f410fb4e70a478c1 SHA-1: a31265eace6f3cd54b6582a2dc4c36adff2bacef SHA-256: 2321e74d380748bdee06e734314a01ffdf3a6727431300ef19f9187dd5c7478a
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, masquerading as a 'free Roblox followers generator' or 'game hack'. The document body text and heuristic firings strongly indicate a social engineering lure to trick users into visiting the malicious URL, likely to download a secondary payload. No scripts were extracted, but the presence of malicious links and the lure suggest a downloader or phishing attack.

Machine Learning

  • Nyx PDF Classifier clean score 0.0360

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 http://netcdn.tw/app/431946152/free-roblox-followers-generator-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D5 19956 bytes
SHA-256: 3698763dba597b230d52bcceff268580eb901913f6e68355b98f862e130e92e3
font_01_sfnt_off00003e39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E39 18920 bytes
SHA-256: a09d8cf0a559fa74e49e4b45e5aaff27024b971303022577c6bda523e712508e

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