Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ec00f4a56dc522b…

MALICIOUS

PDF

45.6 KB Created: 2021-05-14 18:05:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7a88b3d75c74274ca3e44fee9f7b3bf9 SHA-1: 8fcc3aabff1e068c862cb9844b940d57967da0d9 SHA-256: 5ec00f4a56dc522b81efa7642f6caeba7c8ee405c60c2ae2449974d54aced7ad
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirector infrastructure, specifically promoting 'free generator / game hack' lures. The document body and extracted URLs reinforce this social engineering tactic, aiming to trick users into visiting potentially harmful sites. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a malicious intent to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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 https://netcdn.xyz/app/406889139/link-for-free-spins-on-coin-master-game-hack In PDF document text
    • http://www.brtes.com/images/free-roblox-accounts-with-builders-club_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/today-coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://www.brtes.com/images/free-spins-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://www.brtes.com/images/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://www.brtes.com/images/coin-master-spins-gratis_GM406889139.pdfIn PDF document text
    • http://www.brtes.com/images/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • http://www.brtes.com/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.brtes.com/images/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://www.brtes.com/images/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://www.brtes.com/images/clean-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://www.brtes.com/images/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://www.brtes.com/images/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/get-more-robux_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/roblox-bloxburg-free-money_GM431946152.pdfIn PDF document text
    • http://www.brtes.com/images/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000490c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x490C 26464 bytes
SHA-256: f066e6f5b2c1550e83ed4207541acf4a59867e5259920ab07a38435a643bb3a4
font_01_sfnt_off000086a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86A6 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00009057.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9057 18056 bytes
SHA-256: 722d781e478cd0d1a4785e673d05427d87221dd2f44d1d4595ffa323240eece4

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