Malicious PDF — malware analysis report

Static analysis result for SHA-256 f21f94910325e860…

MALICIOUS

PDF

36.1 KB Created: 2021-07-07 14:38:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 7e875b787c4e2016afd336b97b7c3028 SHA-1: aa46ad3f309ef0b6e37827e269351c83e3e1e60c SHA-256: f21f94910325e8609b1324ead200f659f31ff5f70ad382645d17de26ec06679b
200 Risk Score

Malware Insights

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

This PDF document employs a lure related to 'free Robux' and 'game hacks' to trick users into clicking a link. The primary link redirects through known malicious infrastructure, suggesting it's designed to deliver a secondary payload or lead to further exploitation. The document also contains instructions that could lead to command execution, indicating a multi-stage attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/how-do-you-get-free-robux-without-doing-anything-game-hack In PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/descargar-natevangisapotato-stella-hacked-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/robux-hack-inspeccionar_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/can-you-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/i-can-hack-u-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/free-spins-for-coin-masters_GM406889139.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/hack-coin-master-link_GM406889139.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-without-cheat-engine_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/free-minecraft-account-and-password-2021_GM479516143.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/hack-de-roblox-para-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/pastebin-free-robux-no-wait_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/coin-master-unlimited-spin-hack_GM406889139.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/free-roblox-robux-ohne-handynummer_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_off00003427.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3427 22196 bytes
SHA-256: ecaba51b9dba52b1b8300c43766a9d3fcc3f81aeaf1c2da6beae6b4b605ac281
font_01_sfnt_off00006568.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6568 19980 bytes
SHA-256: a10b86a95e1163526836e1939e7e424d9e0b635c08126f71a6a7b060d93e13a9

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