Malicious PDF — malware analysis report

Static analysis result for SHA-256 73e8ae17004e1d36…

MALICIOUS

PDF

42.6 KB Created: 2021-05-13 14:00:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d5ed9beab9d6aba9bb491296462b8c42 SHA-1: 0e2e494c249e9b86af28e844296091baf7645137 SHA-256: 73e8ae17004e1d36b312496a893b3c93f159578cb513c3a05ea96999d77ab622
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The document body, though partially corrupted, contains a URL matching the malicious redirector. This suggests the PDF is designed to lure users into clicking these links, likely leading to further malware downloads or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/how-to-get-minecraft-on-chromebook-for-free-game-hack In PDF document text
    • https://3qblocks.com.tw/image/data/files/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/hack-de-coin-master_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/pig-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/robux-get-com_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-app-hack_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/moonactive-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/minecraft-116-free-download_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/minecraft-mod-updater_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/minecraft-bedrock-edition-pc-free_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-fun-free-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b6f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B6F 24960 bytes
SHA-256: 8b3434cc66320af9506295d1000cb41ec1b39c8f13adf2a3c6d318c031491db7
font_01_sfnt_off00008367.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8367 18628 bytes
SHA-256: f21871f293e1374cce8b481ffeffb78eba3f21dd05dabec399dd2d571c50d8ba

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