Malicious PDF — malware analysis report

Static analysis result for SHA-256 35d6b7403ed016b3…

MALICIOUS

PDF

35.6 KB Created: 2021-07-04 17:59:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 790aa6c2e2289eea8aac403dcffa8862 SHA-1: aa3c0a3428b577e8a54e2dc574a3d1cdd543d30a SHA-256: 35d6b7403ed016b32d079ed360e7717148303e3917accfe8994095a5b772c789
122 Risk Score

Malware Insights

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

The PDF document contains a lure for 'free Robux' and 'game hacks', directing users to a suspicious URL. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document likely instructs the user to copy and paste content into a command-line interface, a common tactic for executing malicious commands or downloading further payloads. The ML classifier also strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/free-robux-generator-no-human-verification-or-survey-2021-game-hack PDF link annotation
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/how-to-o-get-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/free-coin-master-spin-daily-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/moonactive-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/roblox-scam_GM431946152.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/games-that-give-you-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/how-to-hack-pizzeria-roleplay-remastered-roblox-money_GM431946152.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/coin-master-game-free-download-for-pc_GM406889139.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/roblox-aimbot-hack-phantom-forces_GM431946152.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/8bp-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/roblox-vheicle-simulator-hacks_GM431946152.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/watch-videos-for-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/coin-master-game-hack-link_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32C0 21932 bytes
SHA-256: c04fd35e68be2153dd7d423ad39ad95f899efec93f623ff9293d8d329228adfa
font_01_sfnt_off00006363.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6363 20028 bytes
SHA-256: 862718f3553914d13e7050f30ddf7e0bf5fdf78324d2cf1d5c4be66b223f3a80

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