Malicious PDF — malware analysis report

Static analysis result for SHA-256 f066db971a3dccc7…

MALICIOUS

PDF

43.5 KB Created: 2021-06-02 06:16:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: d966b0228a733ab015448ecdcf7ee6d8 SHA-1: c906e53b818657fd9400bc5c39331d3d63fac375 SHA-256: f066db971a3dccc745ee3a206cf86a423dfdc96f6c0ab0b9b6993d5d8b43da79
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, masquerading as game hack generators. The primary lure, 'free Minecraft Skin Maker', directs users to `https://netcdn.xyz/app/479516143/free-minecraft-skin-maker-game-hack`. This indicates a phishing or scam attempt designed to lead users to potentially harmful websites. No scripts were extracted, but the presence of embedded URLs and the heuristic firings strongly suggest a malicious intent to redirect users.

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.xyz/app/479516143/free-minecraft-skin-maker-game-hack In PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/coin-master-real-hack_GM406889139.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.e-learningman16jakarta.com/__statics/gudangsoal/files/free-robux-only-username_GM431946152.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • https://www.e-learningman16jakarta.com/__statics/gudangsoal/files/juego-hackeado-de-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/how-to-scam-on-roblox_GM431946152.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/coin-master-heaven-links-free-spins_GM406889139.pdfIn PDF document text
    • https://www.e-learningman16jakarta.com/__statics/gudangsoal/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.e-learningman16jakarta.com/__statics/gudangsoal/files/free-spins-coin-master-october-13-2021_GM406889139.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.e-learningman16jakarta.com/__statics/gudangsoal/files/robloxhacks_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_off00005124.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5124 24712 bytes
SHA-256: 780705100dbbedf7f5cacc11f9b9760abd1d1d621738f8eef62278aff3adac60
font_01_sfnt_off000088f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88F9 17740 bytes
SHA-256: 7e8236a58a56ce0148da12d4a95e9c7df934e3b28e502a8d8a58237e3f9d26f8

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