Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a6ea2b262208970…

MALICIOUS

PDF

43.6 KB Created: 2021-05-12 09:07:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6594dcc275ff3ff521936394293ad155 SHA-1: 011d7e20e14c8a63db84893dc9d0289cc217b2cf SHA-256: 3a6ea2b2622089709ba313e7366782fdf9689e9325bb7b5fed8c86543af2d80c
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a fake CAPTCHA lure to trick users into clicking a link. The link redirects to a website promising game hacks and free spins, which is a common social engineering tactic. The ML classifier strongly indicates maliciousness, and the embedded URLs suggest a phishing or scam-related campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/406889139/free-spins-coin-master-links-game-hack PDF link annotation
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/free-coins-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/free-robux-download_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/coin-master-hack-version-33-2_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/bux-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/coin-master-hack-version-2021-download_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-download-for-android-mobile_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/coin-master-download-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/coins-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1lampungbarat.sch.id/__statics/gudangsoal/files/coin-master-free-spins-daily-link-game-mod_GM406889139.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_003_off0000500c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x500C 25184 bytes
SHA-256: e11bc3d9858f9ec0a53d9a30e07656408323d52612715bc03451a42b7b46c28f
font_01_sfnt_off000088d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88D4 18056 bytes
SHA-256: 07f1a9832fff0ce02b8ea8bcbd6448fb7022c7ac6c85a00fb5b887865844234a

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