Malicious PDF — malware analysis report

Static analysis result for SHA-256 eed166bc9db87b7c…

MALICIOUS

PDF

47.4 KB Created: 2021-06-01 17:09:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c66742820cb55479858ef66fe88acdf3 SHA-1: 9b3c675be78e17798a21681be8221947a10dfa37 SHA-256: eed166bc9db87b7c959c7eaaeb22fadd71780f4ba76284cbef5b9003544980ab
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising free game hacks and currency generators. The primary lure URL is https://netcdn.xyz/app/431946152/free-robux-no-download-or-survey-game-hack, which is flagged as a malicious redirector. The document body and heuristics indicate a social engineering tactic to trick users into visiting these sites, likely leading to further malware downloads or scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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/431946152/free-robux-no-download-or-survey-game-hack In PDF document text
    • https://ths-academy.net/wp-content/uploads/fsqm-files/error-connecting-pipe-3-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://ths-academy.net/wp-content/uploads/fsqm-files/how-to-use-cheat-engine-on-roblox-without-shutdown-2021_GM431946152.pdfIn PDF document text
    • https://ths-academy.net/wp-content/uploads/fsqm-files/hacks-para-roblox-gratis_GM431946152.pdfIn PDF document text
    • https://ths-academy.net/wp-content/uploads/fsqm-files/minecraft-java-free_GM479516143.pdfIn PDF document text
    • https://ths-academy.net/wp-content/uploads/fsqm-files/free-tiktok-coins_GM835599320.pdfIn PDF document text
    • https://ths-academy.net/wp-content/uploads/fsqm-files/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
    • https://ths-academy.net/wp-content/uploads/fsqm-files/free-tiktok-followers-no-human-verification-or-survey-2021_GM835599320.pdfIn PDF document text
    • https://ths-academy.net/wp-content/uploads/fsqm-files/free-tiktok-followers-instantly_GM835599320.pdfIn PDF document text
    • https://ths-academy.net/wp-content/uploads/fsqm-files/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • https://ths-academy.net/wp-content/uploads/fsqm-files/free-robux-come_GM431946152.pdfIn PDF document text
    • https://ths-academy.net/wp-content/uploads/fsqm-files/dragon-ball-x-roblox-hack_GM431946152.pdfIn PDF document text
    • https://ths-academy.net/wp-content/uploads/fsqm-files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://ths-academy.net/wp-content/uploads/fsqm-files/free-free-robux-apps_GM431946152.pdfIn PDF document text
    • https://ths-academy.net/wp-content/uploads/fsqm-files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://ths-academy.net/wp-content/uploads/fsqm-files/how-to-speedhack-roblox-without-cheat-engine_GM431946152.pdfIn PDF document text
    • https://ths-academy.net/wp-content/uploads/fsqm-files/free-robux-master_GM431946152.pdfIn PDF document text
    • https://ths-academy.net/wp-content/uploads/fsqm-files/fly-hacks-roblox-2021_GM431946152.pdfIn PDF document text
    • https://ths-academy.net/wp-content/uploads/fsqm-files/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://ths-academy.net/wp-content/uploads/fsqm-files/free-sprite-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://ths-academy.net/wp-content/uploads/fsqm-files/free-robux-websites-no-human-verification_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_off00005342.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5342 29624 bytes
SHA-256: 9d93ade357f12c7caae078a2f15b44994c49b93297dc06caca13e925d49c5ac2
font_01_sfnt_off00009423.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9423 19116 bytes
SHA-256: 21dffe5145c89aac53fcc4b21ebbdd60ba4ee7a802f10c616750a1e718770bb6

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