Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0ea551fec4845b0…

MALICIOUS

PDF

32.9 KB Created: 2021-06-26 10:30:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6ffbe05e69a1f570ce55d06b1596a3b9 SHA-1: b7ce844e5d499ab69add76e1213b9d72567314db SHA-256: d0ea551fec4845b0ee1abcfeb53cc7ad9e569c4be772040169032bdfa85e13d6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains links to a known malicious redirector infrastructure, specifically advertising free game hacks and currency generators. The ML classifier strongly indicated maliciousness, and the presence of multiple embedded URLs pointing to similar lures reinforces this assessment. No scripts were extracted, but the document's primary function appears to be social engineering to drive traffic to potentially malicious sites.

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/free-robux-free-real-game-hack In PDF document text
    • https://library.iuli.ac.id/repository/hack-speed-roblox_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-hack-ios_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/cheat-money-roblox-tycoon-fr_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-admin-free-spins_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-codes-2021-android_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-free-spins-link-ios_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-roblox-exploits-no-virus_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-events-2021-robux-free_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-minecraft-codes-2021_GM479516143.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-hack-money-in-roblox-rocitizens_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-date-and-time-hack_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-goku-shirt-free_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-cheats-free_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_off00002d33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D33 21424 bytes
SHA-256: 2d89f6036a7c504b213f3c5d46c56dce1fd08abdd1a962da38bb19b87bf4dc59
font_01_sfnt_off00005c2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C2A 18788 bytes
SHA-256: 4bc1fb5241f7d1727492069c2276e888dd2add0fc79522b75a602c51baadbe08

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