Malicious PDF — malware analysis report

Static analysis result for SHA-256 07e08401af23d909…

MALICIOUS

PDF

32.3 KB Created: 2021-06-18 18:51:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: b331a4dd059f979cd8481cbbe5ec979c SHA-1: a1715c82f217ae46d338c82c48ee30ca21ea242a SHA-256: 07e08401af23d909c39ecbede76d02a8863166368f85705c51e266274b4cbf1c
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links designed to lure users into clicking on "free generator" or "game hack" lures, ultimately redirecting to malicious infrastructure. The document body explicitly mentions "Free Roblox Hack Us" and "CLICK HERE TO ACCESS ROBUX GENERATOR", reinforcing the scam. The embedded links, such as http://netcdn.co/app/431946152/free-roblox-hack-us-game-hack, are flagged as malicious redirectors.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/free-roblox-hack-us-game-hack In PDF document text
    • https://lib.unitri.ac.id/repository/free-robux-website-no-human-verification_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-get-free-robux-2021-android_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/rewards-robux_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-make-free-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/free-coin-master-spins-blogger_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/hack-kick-script-roblox_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-roblox-keywords_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-get-free-robux-on-roblox-codes_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/roblox-hack-ios_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_off000029a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29A8 21956 bytes
SHA-256: f4cb227b7909da5451c263e2e71a2fb52676d3e8c64e073c71433d8fdac3680b
font_01_sfnt_off00005a13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A13 18820 bytes
SHA-256: 1a4205a63a4c62ee5e2ece7937cc582039d18e2188305b723340f9fc22749da6

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