Malicious PDF — malware analysis report

Static analysis result for SHA-256 56b6e3bd1ecd7544…

MALICIOUS

PDF

45.8 KB Created: 2021-05-12 15:32:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: b5a69803e464f56f9f811535efb83a15 SHA-1: 9ed0a87e32501b775101a783c6be69de5d94e326 SHA-256: 56b6e3bd1ecd7544341a11fc33c5c528eda791fbcb467359667a7403cb876f84
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically disguised as game hack generators. The primary lure URL is https://netcdn.xyz/app/406889139/is-coin-master-hacks-safe-game-hack, which is designed to trick users into downloading further malicious content. The presence of a visual download button heuristic further supports the social engineering aspect of this attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/is-coin-master-hacks-safe-game-hack In PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/hack-coin-master-apk-ios_GM406889139.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/robux-game-com_GM431946152.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/coin-master-free-spins-and-coins-haktuts_GM406889139.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/coin-master-free-generator_GM406889139.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/mathep_GM431946152.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/coin-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/http-bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.rajawali.ac.id/senayan8/repository/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d31.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D31 25736 bytes
SHA-256: 16815fa8cdbc5c82cfed312be9535f5fe71a13d1a7e16b2c57bacbd598209a92
font_01_sfnt_off00008869.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8869 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00009253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9253 17716 bytes
SHA-256: fe1f2daf970176796b30352a80040e1234ee7b6b28ca613a5dcb302da82e852c

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