Malicious PDF — malware analysis report

Static analysis result for SHA-256 76d0b7ec018a2d5c…

MALICIOUS

PDF

32.8 KB Created: 2021-06-18 16:52:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: e63acfce1c70df6ebd8148345b9c4036 SHA-1: 49878f05bdc8b1f7df1c12cdb2d024ddb4910ef1 SHA-256: 76d0b7ec018a2d5cbeced12ef40bd250cbbafbe2642c175217c9960c4228588b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure, masquerading as a 'Roblox Hack Free Robux' generator. The document body explicitly contains the URL http://netcdn.co/app/431946152/roblox-hack-free-robux-on-ipad-game-hack, which is identified as a lure for game hacks. This indicates a phishing attempt to redirect users to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.co/app/431946152/roblox-hack-free-robux-on-ipad-game-hack In PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-hack-for-ios_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-hack-online-generator_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/free-100-robux_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-hack-without-root_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/robux-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/hack-client_GM479516143.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/woman-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/is-minecraft-earth-free_GM479516143.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/how-to-sue-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/how-to-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/how-to-hack-your-roblox-robux_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/free-roblox-accounts-with-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_off00002a38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A38 22056 bytes
SHA-256: 31ee47400f8b89f745fd1634a7ddd2203c0939ae15050d745d3786b56bb34ae5
font_01_sfnt_off00005ab4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AB4 19312 bytes
SHA-256: be31f4aedd953377176a8aa858d92a190208607d32b147ed2bd371c47ec228d9

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