Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9011ec3adf1d1f4…

MALICIOUS

PDF

35.6 KB Created: 2021-07-02 08:00:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 372384dd744891b5f5feff6dc3f015e7 SHA-1: 4417b08c121148ce765ad1dc6b0b5ad1ee42adec SHA-256: e9011ec3adf1d1f4ce146c12ee1f749b8c3b26866bdcbfb4dade0753797e833c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.co/app/431946152/hack-roblox-vehicle-simulator-2021-game-hack. This URL is presented as a 'game hack' lure, indicating a social engineering attempt to trick users into visiting potentially harmful sites. The ML classifier also strongly flagged this PDF as malicious.

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.co/app/431946152/hack-roblox-vehicle-simulator-2021-game-hack In PDF document text
    • http://www.library.gkigadingserpong.org/repository/minecraft-free-version_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-cheat-money-android_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-cheat-redline-working-mega_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-roblox-groups-no-owner_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/hack-roblox-jailbreak-2021-speed_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-free-spin-now_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-download-hack-ios_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/kachifpro_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-do-you-hack-your-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-anti-cheat-script_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/cheat-engine-64-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-spins-free-2021_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-phantom-forces-cheat-table_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-game-free_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-roblox-clothes-boy_GM431946152.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FED 22876 bytes
SHA-256: d317a5de2dfeb49659bebf243c2070ba9520f75045b5aa1be5416a33db412aaa
font_01_sfnt_off0000633d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x633D 19980 bytes
SHA-256: d0ca8377597da051dd5a5f3506b71f73121c3a89aae253b6f560bed70d23ca9e

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