Malicious PDF — malware analysis report

Static analysis result for SHA-256 4eb2f8127f0c30e7…

MALICIOUS

PDF

47.6 KB Created: 2021-06-08 13:50:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 22e3aca34aa804863546242255e5f16d SHA-1: d82536d79ca668502157f9d1a1051b8e1f8f2d17 SHA-256: 4eb2f8127f0c30e75111f7303bd071f37cac0dc13589583f3280815dfd6af909
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 game hacks and free currency generators. The primary lure URL is https://netcdn.tw/app/431946152/how-do-you-use-tunturned-roblox-hack-game-hack, which is flagged as a malicious redirector. The document body and embedded URLs reinforce this lure, aiming to trick users into clicking through to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/how-do-you-use-tunturned-roblox-hack-game-hack In PDF document text
    • http://dieter-sauter.com/images/coin-master-free-spins-that-really_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-hack-com_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-robux-from-apps_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-online-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/lemonade-roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-how-to-get-japan-sushi-card-free_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/lots-of-robux_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-robux-link_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/hack-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/cm-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/minecraft-education-edition-free_GM479516143.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E46 24916 bytes
SHA-256: 530ae83926f7b5fed12087d48d5105f3807b93357af6c5100d369896194d5614
font_01_sfnt_off00008755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8755 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off000093fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93FD 19280 bytes
SHA-256: 668314a298168369c917f4e85ca053de1033371850728981ac6e34bd17fe7965

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