Malicious PDF — malware analysis report

Static analysis result for SHA-256 e20358fa396d18d9…

MALICIOUS

PDF

37.0 KB Created: 2021-05-21 18:06:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3d7bbed4223e16769a70674d43b34818 SHA-1: f3cd8ff42cdf2e5acd6091c8f37b22026520a470 SHA-256: e20358fa396d18d9158bec786566005c3bc5709c9e37a2c20bd8f3f8eeb5d0cc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with promises of free game hacks or exploits. The document body explicitly mentions 'Free Exploits For Roblox' and includes a call to action to access a generator. The embedded URLs likely lead to further malicious content or malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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-exploits-for-roblox-game-hack In PDF document text
    • http://unilin21.ru/images/roblox-studio-free-download_GM431946152.pdfIn PDF document text
    • http://unilin21.ru/images/where-tiktok-free-views-and-likes_GM835599320.pdfIn PDF document text
    • http://unilin21.ru/images/free-spins-on-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://unilin21.ru/images/pubg-uc-mod-2021_GM1330123889.pdfIn PDF document text
    • http://unilin21.ru/images/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000345c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x345C 25732 bytes
SHA-256: e27e6aac45c34a021d058d813c1b5641b0fbd0e18640e2336d8157109feb1d5b
font_01_sfnt_off00006f25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F25 18348 bytes
SHA-256: 3eb1125b3232d06dc8927376afe50af41f8c0a9e23720a9da0c3984e77695e12

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