Malicious PDF — malware analysis report

Static analysis result for SHA-256 7783d1b72cfb23a6…

MALICIOUS

PDF

44.4 KB Created: 2021-06-03 10:50:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 24bb3a352062e0033d50a39e9e42b790 SHA-1: abef93eba118438ee591f6e49ce1f3ada80a751d SHA-256: 7783d1b72cfb23a68092e35d291f302124cb816aba6aad52374dde9b2dd679de
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • 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.
  • 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.online/app/406889139/coin-master-hack-xyz-2021-game-hack PDF link annotation
    • http://library.imz.or.id/repository/coin-master-hack-software-download_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/www-robux-us_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-gang_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-free-followers_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-spin-today-coin-master_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/pubg-uc-hack-software_GM1330123889.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-roblox-clothes-templates_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-games-free_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/minecraft-free-download-2021_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/minecraft-pe-free-apk_GM479516143.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_off0000504e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x504E 25316 bytes
SHA-256: e40735ed5360a5777ed28035dffc21944f4e52bd2bd94531e73b154348a9d3ad
font_01_sfnt_off00008992.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8992 18608 bytes
SHA-256: 8b2b34c8a3d9768e2ed8a95f1b48ebc4b02ea852e4558bd7b4aefc607f1376b3

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