Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1843ee95ebe9121…

MALICIOUS

PDF

35.2 KB Created: 2021-06-28 16:52:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: e02213c21a5640a36f19e40a6707c930 SHA-1: ac82b18c9a06e734f4fb5bbd070a09235893bb75 SHA-256: b1843ee95ebe9121613c56cf97f1abfa1386f013fde063ebe4a40d33da56bfed
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to a known malicious redirector, specifically designed to lure users with promises of free game currency or hacks. The primary malicious URL identified is http://netcdn.co/app/431946152/free-robux-cript-tamper-monkey-game-hack. The document body and embedded URLs confirm the lure is related to popular games like Roblox and Minecraft. No scripts were extracted, but the presence of malicious redirector links and the lure strongly indicate a phishing or scam attempt.

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.co/app/431946152/free-robux-cript-tamper-monkey-game-hack In PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/how-to-duplicate-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/free-roebucks-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/roblox-hack-r_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/picture-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/pastebin-robux-hack-accounts-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/roblox-obby-gives-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/coin-master-hack-xyz-apk-download_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/2021-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/tiktok-free-hearts-hack_GM835599320.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_off0000316c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x316C 21908 bytes
SHA-256: a331c6bad238c9b64404c5a56ee30a83534b3828646536adcdc7d5d2ee37008a
font_01_sfnt_off00006238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6238 19920 bytes
SHA-256: 98bb86a6b83b0b3acca990f0c858ed14a652106f0234bcd8806541a8cd09b696

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