Malicious PDF — malware analysis report

Static analysis result for SHA-256 33e00fd2c9ebf289…

MALICIOUS

PDF

46.4 KB Created: 2021-05-13 13:32:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 46b55c96dc12f9250d03ff963f76c1b7 SHA-1: 7e3b9e0b4ce95d5e71edc33ac2b3c0588164f457 SHA-256: 33e00fd2c9ebf2898c2fc3a105e34499a48ea0c1f74d62088ef413ea13702696
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically designed to lure users with promises of free game items. The primary lure URL is 'https://netcdn.xyz/app/431946152/google-how-do-you-get-free-robux-game-hack'. While no scripts were explicitly extracted, the PDF structure and embedded links strongly indicate a social engineering attack aimed at driving traffic to malicious sites, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/google-how-do-you-get-free-robux-game-hack In PDF document text
    • https://dentmate.com.tw/image/data/files/free-robux-images_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coinmasterfreespinlink_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/minecraft-skins-download-free_GM479516143.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/lazyblocks-com-robux_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-minecraft-account-list_GM479516143.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/roblox-svg-free_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/how-do-you-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/are-robux-generators-safe_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-hack-apk-link_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-free-pet-food-links_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-key-free-spin_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/how-to-hack-coin-master-game-without-verification_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/get-robux-com_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_off00004b3a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B3A 25288 bytes
SHA-256: ef193528e4724a762e66228964c33f3c6ac4a00579c7b7c4c3be933b1fc72fb7
font_01_sfnt_off0000863f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x863F 3016 bytes
SHA-256: 4c3e2db5174821787a4569c9da4979555510caebd15fb9cea35573c139e242bd
font_02_sfnt_off000090a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90A2 18972 bytes
SHA-256: 7e42234451cc840f7005e057c881a5adaeb6eb05dfbb8a23217c49a1ae6b06df

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