Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4d45a69fea5e563…

MALICIOUS

PDF

34.9 KB Created: 2021-06-29 02:12:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 6c722b177d590252fd7457a7f5f0392e SHA-1: 4b9de6b7a342e66017d158e2f71937f7dacd860f SHA-256: f4d45a69fea5e5637c528494b3cd799a7578d07257ea2206e6163a6f1ca416f0
200 Risk Score

Malware Insights

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

This PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks or generators. The document body and embedded URLs suggest a phishing attempt to trick users into visiting malicious sites. The presence of a clipboard command lure indicates an attempt to trick users into executing commands, potentially to download and run further malicious payloads.

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.co/app/431946152/did-roblox-get-hacked-in-2021-game-hack In PDF document text
    • http://pustaka.bbppketindan.info/repository/daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/get-free-account-roblox-22-02-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-vip-server-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/download-robux-hack-no-downlowdes_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-stranger-things-promo-codes-cheat-updates_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/can-i-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-download-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-free-boy-clothes_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/minecraft-apk-download-free-11-055_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/who-type-of-roblox-hack-is-the-bes_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/why-do-people-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/get-free-robux-copy-and-paste_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-roblox-accessories-codes_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-link-blogspot_GM406889139.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_off000030f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F6 21916 bytes
SHA-256: 62b5ec5c9053efee80011fe0609cf357aecdf2a948ca9b88e26c0ffe852638bb
font_01_sfnt_off00006185.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6185 19624 bytes
SHA-256: fe250ee1cb6918fff096129c8aa4d64e5b369d62790f64a3a807a0b6eab0cb26

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