Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ff92ea600d12342…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 10:10:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cd8c5623732306d7c4586d4513610fc2 SHA-1: 520632b4ba7e82d845165fc9028db132ce153ece SHA-256: 9ff92ea600d12342a9ab4d0994ae80b52d20544c8a1a46aeeb4288872136af17
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.tw/app/431946152/where-to-get-free-robux-game-hack. The document body and heuristics suggest a lure for game-related cheats or currency, aiming to trick users into visiting these malicious links. No scripts were extracted from this sample, limiting the analysis of direct execution or further payload delivery.

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/where-to-get-free-robux-game-hack In PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-roblox-stuff-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-free-spins-link-ios_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-robux-cheats-card_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-roblox-griups_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-hack-version-apk-download_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-robux-cheat-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/aprender-hackear-en-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-fly-script-hack_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/triga-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/check-it-free-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/https-iosgodscom-topic-20213projectrobloxhackbeta_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/how-to-get-money-in-roblox-high-school-cheat-engine_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-c2-roblox_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_off00003048.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3048 21972 bytes
SHA-256: a617cfedd670df4b16f5ef2455f045882e50b3e455201aed0b4042fa3c55f3de
font_01_sfnt_off000060de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60DE 19184 bytes
SHA-256: e942b93b228ea09a2b9b89b185e62feaf889c583a2152a741a620a9da1dbb754

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