Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a34f30a99f9584a…

MALICIOUS

PDF

33.3 KB Created: 2021-07-06 03:07:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2c496711024b4cc45353f9d2964393ba SHA-1: ac34bcf3c1e9ed300255b4c7feb1464f877a73da SHA-256: 0a34f30a99f9584add03f74f036987ca0bb3f512309f9dd2ac554a655a254acb
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 at http://netcdn.tw/app/431946152/robux-generator-no-survey-game-hack. The document body explicitly mentions 'Robux Generator No Survey' and 'CLICK HERE TO ACCESS ROBUX GENERATOR', indicating a social engineering lure to trick users into visiting potentially harmful sites. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

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.tw/app/431946152/robux-generator-no-survey-game-hack In PDF document text
    • http://library.umuslim.ac.id/repository/roblox-free-robux-maps_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-free-spins-hacktman_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-robux-february-2021_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/kristjon-15k-robux-reward-hack-tutorial_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-fly-hack-in-roblox-no-download_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/gamehunters-club-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-noclip-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/generator-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-jailberak-hack_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-hack-your-roblox-avator_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-robux-points-2021_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-groups-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/old-roblox-account-free_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/feb-23-2021-free-coin-master-spins_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_off00002abc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ABC 22672 bytes
SHA-256: d83df95366dd1e90ae3f69b069fd422f2d357712549bf44f2682a5f08ba42353
font_01_sfnt_off00005d61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D61 18952 bytes
SHA-256: 94f6cf16237cbca8d0e390b5c3f7c21e1b4ca1017dab6383eb044ff4db3044d4