Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e0d08d30865b41e…

MALICIOUS

PDF

34.1 KB Created: 2021-07-05 19:08:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 28fb7d1bf6af20dcb559ef5424ce480a SHA-1: 477ca470990d7eb7d14603d20948fed33530bd01 SHA-256: 1e0d08d30865b41ed75f3237422928ea12b5f56f76df36ee2fa5f96e3899e11f
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 lures related to game hacks and free currency. The heuristic firings confirm the presence of malicious redirector links and a lure for game hacks. While no scripts were extracted, the document's structure and embedded URLs strongly suggest it is designed to lead the user to exploit kits or phishing pages, likely via a drive-by download or a direct 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/431946152/skyline-roblox-hack-game-hack In PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-use-cheat-engine-on-roblox-one-punch-man_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/wizard-hacks_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-bloxburg-free-to-play_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/https-rbx-place-rewards_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/hack-roblox-espaol-elements_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-create-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-hacked-apk-add-unlimited-money_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-get-back-my-hacked-roblox-account_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-free-robux-website_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_off00002ef2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF2 22200 bytes
SHA-256: d886026912d004179b668a4e9acc2a80d05f03a0a7cc088f1cfcf566c6f57421
font_01_sfnt_off0000604d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x604D 18956 bytes
SHA-256: 5e3611ce8b5f35cd08d8f1bff43677a6687615ee6ff5b88c90717c74f139e8e4

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