Malicious PDF — malware analysis report

Static analysis result for SHA-256 22408097f6cb0cdd…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 00:08:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 5dacd2b919327ffad209488751db36ee SHA-1: b64f953a4314513ac80597cf4c4d7eb757d50a06 SHA-256: 22408097f6cb0cdd5715be0b1ba2b1a0d349f99c3239ca4fc482c54210f93266
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a malicious redirector link that masquerades as a game hack generator. The link, http://netcdn.tw/app/431946152/dailyrobux-game-hack, is designed to lure users into downloading potentially harmful content. The ML classifier also flagged this PDF with high confidence, indicating malicious intent.

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/dailyrobux-game-hack In PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/login-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/roblox-skin-free_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/minecraft-tower-defense-hacked_GM479516143.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/irobux-com-redeem_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/make-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/e-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/coin-master-hack-version-download-2021-android_GM406889139.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/master-hack-coin_GM406889139.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/free-robux-working_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/free-coin-master-link-2021_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_off0000329d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x329D 22464 bytes
SHA-256: ad50c319338e4078fcbf525e6734915f32a7ab4a7cc9250430af8d49f5e97431
font_01_sfnt_off000064f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F2 19092 bytes
SHA-256: 319a3b741e60406540a19adb70d742732d8bf817a9bc58f36e4d58ba7e1a6a2d

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