Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c26ebf75eb2c882…

MALICIOUS

PDF

34.9 KB Created: 2021-07-06 03:48:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 20bd89067f4686c64ac36913a47193d7 SHA-1: 4b9b63a187205a203c12c1e1b740b7e905c8edcc SHA-256: 3c26ebf75eb2c882ade666dd871200d761b8468b93a256bd8fa714af702ea281
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as 'free generators' or 'game hacks' for popular titles. The primary lure is the URL http://netcdn.tw/app/431946152/how-to-get-free-stuff-on-roblox-2021-game-hack, which is designed to trick users into downloading further malicious content. The document's structure and embedded links strongly suggest a phishing or social engineering attack aimed at distributing malware.

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/how-to-get-free-stuff-on-roblox-2021-game-hack In PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/how-do-u-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/how-to-get-minecraft-bedrock-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/how-to-give-yourself-robux-by-hacking_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/roblox-cheat-codes-rocitizensnovember-2021_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/roblox-account-taker_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/hacks-para-roblox-dragon-ball-rage_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/cheat-roblox-speed-simulator_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/roblox-booga-booga-mojo-hack-weardevs_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/free-money-for-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/minecraft-skins-download-free_GM479516143.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/roblox-lucky-block-battlegrounds-cheats_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/cc-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/free-roblox-pin-codes_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_off0000302b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x302B 22412 bytes
SHA-256: e13b0233e9cd9d2e55e59d7919e23577ac3e5cfe69e1687c5fca80965ce20068
font_01_sfnt_off000061cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61CD 19460 bytes
SHA-256: 8426f038795ea5d8a795bf0375a678dc031ed66a2a703316a826a74a76c6ece6

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