Malicious PDF — malware analysis report

Static analysis result for SHA-256 1633eb4762c22a11…

MALICIOUS

PDF

36.5 KB Created: 2021-07-07 07:17:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: dfc6fa0b63f3a428e23d2a7a09f0f040 SHA-1: a5cc1e48752ace5e96ab4cea3651bbb2ea1f1c5a SHA-256: 1633eb4762c22a1102dea7309976afe4b0d2494348478ead0d88ad3223e71f35
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document employs a lure of free game currency and hacks to entice users to click on embedded links. The primary link directs to a known malicious redirector infrastructure, which is likely used to deliver a second-stage payload or lead to further phishing attempts. The ML classifier strongly indicated maliciousness, and the presence of multiple redirector links reinforces this assessment.

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/free-robux-generator-no-survey-no-download-no-human-verification-game-hack In PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/free-robux-console_GM431946152.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/html-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/minecraft-pe-apk_GM479516143.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/roblox-all-gamepasses-free-script_GM431946152.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/roblox-666-hack_GM431946152.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/how-to-get-free-robux-no-verification-2021-trackid-sp006_GM431946152.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/coin-master-free-spins-fb-champion_GM406889139.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/como-usar-hack-dillusion-roblox_GM431946152.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/daily-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/best-free-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/intentan-hackear-mi-cuenta-de-roblox-lyna_GM431946152.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/coin-master-daily-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/this-obby-gives-you-free-robux_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_off00003503.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3503 22252 bytes
SHA-256: 4bd4ca61f803f7fb4f77c3463ffed5e0f1391ee5b2bc7663f59f658c6764a974
font_01_sfnt_off00006644.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6644 20208 bytes
SHA-256: 0ef666815fca28e6c6cf3435968b0c81522e44f0a8d83e831ed265583d1f0e29

Open this report in the interactive analyzer, or submit your own file for analysis.