Malicious PDF — malware analysis report

Static analysis result for SHA-256 34127e22ac7bc627…

MALICIOUS

PDF

35.2 KB Created: 2021-07-06 03:10:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: dd446453b3cfc2c8cead8b8a25f8d1b9 SHA-1: a17d78ad6baf874d003ed0026250bb44a47f7f2e SHA-256: 34127e22ac7bc62783846f9888cf36a85339e583ce19582abbe126e6f26e439c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and game hack sites, designed to lure users into downloading potentially unwanted applications or visiting malicious infrastructure. The document body and embedded URLs explicitly mention 'Coin Master Hack Apk', 'free robux', and 'free spins', indicating a social engineering tactic to trick users. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to harmful content.

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/406889139/coin-master-hack-apk-2021-download-game-hack In PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/coin-master-hack-ios-12_GM406889139.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/roblox-hack-client_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/roblox-hack-site_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/roblox-comroblox_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/roblox-visual-cheats-script_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/free-robux-wheel_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/how-do-you-earn-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/free-coin-master-androd-cheats-2021_GM406889139.pdfIn PDF document text
    • https://www.elearning.ma-alqasimiyah.sch.id/__statics/gudangsoal/files/roblox-land-free-robux_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
font_00_sfnt_off00003167.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3167 22648 bytes
SHA-256: dd7e402520008cc7635512baf2b18ff2b1c8bfea6a640c1d2e6f96331bee1024
font_01_sfnt_off000063f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F3 19160 bytes
SHA-256: 08c3d26020315796c296df9400c9a2a920b0dbbe4ac3986bc7fb3bd2c9b27f96

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