Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bbb61af1d25dc7b…

MALICIOUS

PDF

39.0 KB Created: 2021-05-25 00:03:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4ba79fa67e57a0eafb534a5cf528f40a SHA-1: 71d28ab06f369995f4567670848b6e943a3ef4bc SHA-256: 5bbb61af1d25dc7b08687131a8b52f329578b404a0c4d832068faa3bf43c2071
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors and lures users with promises of game hacks and free currency. The ML classifier also flagged the document as malicious. The document body and embedded links suggest a social engineering tactic to trick users into visiting malicious sites, likely for malware distribution or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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/479516143/free-minecraft-pe-server-game-hack In PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003408.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3408 25076 bytes
SHA-256: 43a30d85798e30efa542de97a7aff0f310a1bddf3c79e314997fb99f50fb62a7
font_01_sfnt_off00006e4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E4E 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off0000785e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x785E 17836 bytes
SHA-256: 40ba9e4e6a96b9fbdb66fe1c3cdc29181d81f4b56a4eeac74a5dcf6bc0460396

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