Malicious PDF — malware analysis report

Static analysis result for SHA-256 107dcc821ea765ce…

MALICIOUS

PDF

39.5 KB Created: 2021-05-30 17:31:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 09def054d7fa2e0050d2c47e0b285a3a SHA-1: 71d2c32b9a8774366ea4b57e547b6533bffa8806 SHA-256: 107dcc821ea765ceafb6f9cd3793ce7aa19a9b8d376aa4b0c52c305b1e8b028b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'free game hacks' and generators. The primary redirect URL is https://netcdn.xyz/app/479516143/minecraft-classic-free-game-hack, which is flagged as a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering tactic to lure users to potentially malicious sites, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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/479516143/minecraft-classic-free-game-hack In PDF document text
    • https://ths-academy.net/wp-content/uploads/fsqm-files/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • https://ths-academy.net/wp-content/uploads/fsqm-files/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • https://ths-academy.net/wp-content/uploads/fsqm-files/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • https://ths-academy.net/wp-content/uploads/fsqm-files/roblox-hack-2021_GM431946152.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-java-free_GM479516143.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/minecraft-free-app_GM479516143.pdfIn PDF document text
    • https://ths-academy.net/wp-content/uploads/fsqm-files/free-robux-kid-friendly-no-human-verification_GM431946152.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/minecraft-skins-download-free_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/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • https://ths-academy.net/wp-content/uploads/fsqm-files/get-free-spins-coin-master_GM406889139.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://sigmaclient.info#2In PDF document text
    • https://flux.today#3In 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_002_off00003f89.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3F89 25544 bytes
SHA-256: 06a409ccd786a830e3897dd4c2b8df05fbe336082176d6281968c3c5b845df94
font_01_sfnt_off00007abe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ABE 17644 bytes
SHA-256: 1ee95ff2a7de50dda93d1224861f64f53bfa9b684d20bd49bdd14d4804095e27

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