Malicious PDF — malware analysis report

Static analysis result for SHA-256 f013de79b020d339…

MALICIOUS

PDF

34.6 KB Created: 2021-07-07 02:08:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: ccb114db57857fc75a821e2e4a331358 SHA-1: 0bc860bc45d0a45bc2edf03b26d10c80df4eeb7a SHA-256: f013de79b020d3392a2b7cd742fda23bac140c7532be7950f8a935c65f172b8e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appears to be a game hack or generator. The primary link, http://netcdn.tw/app/431946152/roblox-hack-game-game-hack, is identified as malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a social engineering tactic to redirect users to potentially malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/roblox-hack-game-game-hack In PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/free-roblox-gift-card-generator-2021_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/robux-gratis-2021-hack_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/fulflex-roblox-hack_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/roblox-free-draw-2_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/dragod-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/cowboy-tshirt-roblox-free_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/free-roblox-app-for-ipad_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/how-to-get-free-funds-on-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/how-to-get-free-robux-hack-on-iphone_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/free-robux-no-sign-up_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/how-does-roblox-know-if-you-are-hacking_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/how-to-win-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/roblox-free-gui-op_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • https://e-learning-man2jakarta.com/__statics/gudangsoal/files/is-roblox-on-ps4-free_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
font_00_sfnt_off00002fe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE1 22620 bytes
SHA-256: e1b619902ba0a2a918661da963fc15c330a3a01f94ac2827bd625a47ccdc53d1
font_01_sfnt_off00006288.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6288 18916 bytes
SHA-256: d5b7e8b59fa9782264f7ee2edc2597070f93b03102e5dae9fe86d552d037f777

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