Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fb2d94946a0e9f8…

MALICIOUS

PDF

35.1 KB Created: 2021-07-06 11:58:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 9eb33cac2c031471a9771ef579536760 SHA-1: 6a46cf7e728d05ab351748e747304880685044d6 SHA-256: 8fb2d94946a0e9f8273b5c4d8d919a0994dac387a20099e25c03925029239cad
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, designed to lure users into clicking for game hacks. The primary malicious URL is http://netcdn.tw/app/431946152/robux-pc-hack-game-hack, which is associated with a lure for game generators. The document body and heuristics indicate a social engineering tactic to drive traffic to potentially harmful sites.

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/robux-pc-hack-game-hack In PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/roblox-money-cheats-no-survey_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/free-robux-come_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/free-robux-codes-noverber-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/coin-master-free-coins-link-2021-deutsch_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/tiktok-fans-free_GM835599320.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/how-can-i-hack-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/roblox-games-free-admin_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/free-online-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/roblox-lumber-tycoon-2-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn4madiun.sch.id/__statics/gudangsoal/files/coin-master-hackcom-xyz_GM406889139.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000316c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x316C 22996 bytes
SHA-256: 09a1444413b454bffd6939d5a9fd5b1e5ae798be1121a8bcce3401d908e5a165
font_01_sfnt_off000064b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B4 18876 bytes
SHA-256: d292a5d32f36a187ef9b2286f69c66e13cc256655eda518711e9d9a8023a0cbc

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