Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4cddbfdd01c6f4e…

MALICIOUS

PDF

35.0 KB Created: 2021-06-23 09:33:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 93722e07464e3a3d02b9a347ee7102a9 SHA-1: 1f6b49017f99400b2ff69d56ffabae30a93a74dd SHA-256: e4cddbfdd01c6f4eb3e9cf1250295889d7d0a0d89122447dea448c3a3e9fb71d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites that are flagged as malicious redirectors, specifically promoting 'game hacks' and 'free generators'. The ML classifier also strongly indicated maliciousness. The primary lure appears to be related to popular online games, aiming to trick users into visiting these compromised sites, which likely serve as a gateway for further malicious activity such as malware downloads or phishing.

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-fix-roblox-hacks-game-hack In PDF document text
    • http://olimpik.mk/imagescke/upload/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/game-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/how-to-get-free-robux-2021-gabe_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/dailyrobux_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/comapp-trekfree-coin-spindaily-link-master_GM406889139.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/free-coins-and-spins-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/how-to-hack-step-by-step-password-pictures-roblox_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/how-to-get-minecraft-for-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/roblox-gift-card-uk-free_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/nike-t-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://olimpik.mk/imagescke/upload/files/roblox-how-to-look-at-the-free-music-selection_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_off00003314.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3314 22120 bytes
SHA-256: e280912cf5b04e7da2c2bda23be4bd3147c6aa3f0ff4b011e81bca28362f4358
font_01_sfnt_off000063d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D3 19104 bytes
SHA-256: 1b6dd2a0dbcea5937509da291cb2c1bc2ff706800f5890d766c035bec0cf1948

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