Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8ccdbcc2bdb8ecf…

MALICIOUS

PDF

34.6 KB Created: 2021-07-03 13:51:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 8791b976e1f3361c953db577edd33f12 SHA-1: 36ad52b1814a7db24c494cd5c3bec79aad6b1058 SHA-256: d8ccdbcc2bdb8ecf96dad28ccb6314d91d2ec80271af74d4dda06f1b6a0b0aae
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to known malicious redirectors and websites offering 'free generator / game hack' lures, indicating a phishing or malware distribution attempt. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lures suggest an attempt to trick users into visiting malicious sites, likely leading to credential theft or the download of a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/406889139/daily-free-spins-game-hack In PDF document text
    • http://suaedy-library.net/repository/hacking-roblox-jalibreak-noclip_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-roblox-songs_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-cheats-and-hacks_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/minecraft-pe-hack-client-2021_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/robux-hacks-p_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/como-obrtener-10000-robux-de-verdad-hack_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/play-free-online-games-roblox_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-robux-real_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/roblox-sex-hack-script_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-roblox-accounts-that-work_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/hack-para-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/hack-coin-master-nyc_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-free-spins-moonactive_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-dominus-hat-roblox_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-latest-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/earn-robux-today-earn-robux-today_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/robloxmatchcom-free-robux_GM431946152.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_off0000318f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x318F 22904 bytes
SHA-256: 4dbdd8f0babde3ccbdc087caab33dfc175a0efb2b034f96a9b3e0cd81b1aadb6
font_01_sfnt_off0000648c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x648C 18348 bytes
SHA-256: 1a36946a0cb75cea73d2a4e26e89845c8e7c06408ba3f54c43b6c58b563cb802

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