Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a45b248b550f86d…

MALICIOUS

PDF

34.3 KB Created: 2021-06-29 01:33:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 091e62491da13bd64c7e094cc1c3622a SHA-1: a158c640de2376582be48d110874c8f61b363e99 SHA-256: 3a45b248b550f86d301f69ee6521800ae6d85c9cd67c2c65a7bc2babd3216c1c
160 Risk Score

Malware Insights

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

The PDF contains multiple links disguised as game hacks and generators, specifically targeting popular games like Roblox. The primary link, http://netcdn.co/app/431946152/how-to-hack-to-get-roblox-money-game-hack, is flagged as a malicious redirector. This suggests the document's purpose is to redirect users to potentially malicious sites that could host further exploits or phishing content.

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.co/app/431946152/how-to-hack-to-get-roblox-money-game-hack In PDF document text
    • http://lkp.cz/FRONTEND/IMG/PICTURES/files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://lkp.cz/FRONTEND/IMG/PICTURES/files/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://lkp.cz/FRONTEND/IMG/PICTURES/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://lkp.cz/FRONTEND/IMG/PICTURES/files/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://lkp.cz/FRONTEND/IMG/PICTURES/files/roblox-jump-hack-2021_GM431946152.pdfIn PDF document text
    • http://lkp.cz/FRONTEND/IMG/PICTURES/files/roblox-blob-simolator-2-hack_GM431946152.pdfIn PDF document text
    • http://lkp.cz/FRONTEND/IMG/PICTURES/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://lkp.cz/FRONTEND/IMG/PICTURES/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lkp.cz/FRONTEND/IMG/PICTURES/files/what-is-coin-master_GM406889139.pdfIn PDF document text
    • http://lkp.cz/FRONTEND/IMG/PICTURES/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://lkp.cz/FRONTEND/IMG/PICTURES/files/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lkp.cz/FRONTEND/IMG/PICTURES/files/roblox-brick-bronze-cheat-engine_GM431946152.pdfIn PDF document text
    • http://lkp.cz/FRONTEND/IMG/PICTURES/files/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lkp.cz/FRONTEND/IMG/PICTURES/files/roblox-free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://lkp.cz/FRONTEND/IMG/PICTURES/files/free-robux-codes-2021-june_GM431946152.pdfIn PDF document text
    • http://lkp.cz/FRONTEND/IMG/PICTURES/files/how-to-get-free-robux-on-roblox-computer_GM431946152.pdfIn PDF document text
    • http://lkp.cz/FRONTEND/IMG/PICTURES/files/coin-master-hack-co_GM406889139.pdfIn PDF document text
    • http://lkp.cz/FRONTEND/IMG/PICTURES/files/roblox-meep-city-hacks_GM431946152.pdfIn PDF document text
    • http://lkp.cz/FRONTEND/IMG/PICTURES/files/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lkp.cz/FRONTEND/IMG/PICTURES/files/free-robux-games-on-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_off00002f4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F4F 22112 bytes
SHA-256: d93a68922935ce4d6885ec5b6af0d984d9179108d35dd485941dbbc79a57d72c
font_01_sfnt_off00006001.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6001 19300 bytes
SHA-256: 8d1634fe93dfcf4df2947e6738611ead01b630ec65ccdce23acab3fb670b2a20

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