Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a4d0e08e5a88d75…

MALICIOUS

PDF

49.5 KB Created: 2021-06-13 14:58:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ab1010b074d89c4b37f933c5665253f2 SHA-1: d0d721294f614a151073f5708580ded69ed86f6f SHA-256: 1a4d0e08e5a88d751debe654a252d69bf3436d8f8cd7e4f1a85bb3b7549cd23d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure for game hacks and cheats, directing users to malicious redirectors. The presence of embedded URLs and a 'download button' heuristic indicates an attempt to trick the user into downloading a malicious payload. While no scripts were directly extracted, the PDF structure and heuristics strongly suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

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-mad-city-hack-script-download-game-hack In PDF document text
    • http://perpus.i2s-learning.com//repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-money-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-phantom-forces-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/hack-roblox-jailbreak-money-pc_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
stream_004_off0000537f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x537F 30960 bytes
SHA-256: fd4a9defa576949621801c60584a26850e8f8cb8c87024f467d0227b0c84abb5
font_01_sfnt_off00009bb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BB7 19464 bytes
SHA-256: d2463e7d7a669e884b380eaa56ca275a080e9f2ad9b504bb511241695197530a

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