Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc6ffaaec24cf116…

MALICIOUS

PDF

42.6 KB Created: 2021-06-04 00:28:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: f833919620d4c1fc428525909dcee40a SHA-1: 068dfb15fffa50045a9923109ec930f92fc0af86 SHA-256: bc6ffaaec24cf116583538148dec8664d5bf82c4d908efdad1548b690d61fcaf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically advertising game hacks and generators. The ML classifier also flagged this PDF as malicious. The presence of embedded URLs and the critical heuristic firings strongly indicate a phishing or scam attempt designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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.online/app/406889139/coin-master-attack-hack-apk-game-hack In PDF document text
    • http://perpus.unik-kediri.ac.id/repository/www-robux-redeem_GM431946152.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/free-spin-link-coin-master-app_GM406889139.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/freespinandcoinblogspot-com-2021-11-coinmasterfreespins_GM406889139.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/free-robux-download_GM431946152.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/hack-master-coin-pc_GM406889139.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/coin-master-hack-co_GM406889139.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/how-can-you-get-robux_GM431946152.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/coin-master-daily-gifts_GM406889139.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/how-to-get-free-gold-cards-on-coin-master_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_004_off00004db3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DB3 24744 bytes
SHA-256: af2c1a3cb4fd1e5a86d59ee6ef7e245d0c0d42b3c62f78276d9efbe6a58714d0
font_01_sfnt_off000084c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84C8 17892 bytes
SHA-256: e6840f3bb6a03ec6cfdeee84f4ec8c5107362a4db383bde52e6abc5845af31eb

Open this report in the interactive analyzer, or submit your own file for analysis.