Malicious PDF — malware analysis report

Static analysis result for SHA-256 7df3b763a80eec44…

MALICIOUS

PDF

44.2 KB Created: 2021-06-09 02:40:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4146e4368898a82e2041342d639012be SHA-1: 197d463f6fee5b7928bbc55ab3557eb7d4b44692 SHA-256: 7df3b763a80eec4410b31bfad5f705a26934ba4fdb6afa38d836e0b76f014f1d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector pointing to 'https://netcdn.tw/app/431946152/hack-file-roblox-game-hack'. This lure is designed to trick users into downloading potentially unwanted or malicious files related to game hacks. The presence of multiple similar URLs suggests a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/hack-file-roblox-game-hack In PDF document text
    • https://deutsch-study.com/image/data/files/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/pubg-uc-nepal-price_GM1330123889.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/heroes-online-roblox_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/pubg-uc-20_GM1330123889.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-roblox-toy-codes-2021_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-coins-coin-master-today_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-roblox-website_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/coin-master-hack-iosgods_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/roblox-account-taker_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/microsoft-bing-robux_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_off00004f4c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F4C 26052 bytes
SHA-256: 5b73409dbf584115ab39068385e12cac61f7d6507e9693c99502b73f5dfd6709
font_01_sfnt_off000089aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89AA 18468 bytes
SHA-256: 00d3e50c33ffd87d888d7de24d7547a8e5ce910b693a5839641585aee15f5d88

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