Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e0ec71b6dd676f7…

MALICIOUS

PDF

42.4 KB Created: 2021-05-11 15:30:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 9dc8f4cf2001c2f7462c0302a008bcd6 SHA-1: ae3e1d9cc2dfd48eab70fea4e8d73763bd17f18e SHA-256: 6e0ec71b6dd676f72111e70f45c44252ab775b2e50c9616efd3c90e445482ec2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, specifically promoting 'free generator' or 'game hack' lures. The primary malicious link identified is https://netcdn.xyz/app/406889139/free-spins-coin-master-links-2021-game-hack. The document body and embedded URLs suggest a social engineering tactic to trick users into downloading or visiting potentially harmful sites. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/free-spins-coin-master-links-2021-game-hack In PDF document text
    • http://pustaka.fti.unand.ac.id/repository/coin-master-game_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/worst-client_GM479516143.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/gamehunters-club-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/best-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/cmaster-club-coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/coin-master-hack-2021-android-apk_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-gift-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/robux-free-co_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/coin-master-hack-spins-android_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/roblox-pics_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/coin-master-hack-apk_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_off000049c9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49C9 24644 bytes
SHA-256: 64097eff4b7b099b1364ea2e0ace8ab506d93333f92d67f6468e0f664d0bb4e7
font_01_sfnt_off00008296.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8296 18456 bytes
SHA-256: c809cb62993c96a2792eb05fd7593de41ec7ce02e3f179f2cd9cbcb899f0cf70

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