Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a529c1e0c008159…

MALICIOUS

PDF

44.2 KB Created: 2021-05-14 16:01:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d9a690adff03f873bcdd22c98b3bae96 SHA-1: 20b97fc8795fe428c8d671072e881395fd51aff8 SHA-256: 0a529c1e0c0081599d3f93f84180d117f561c6482162bcfd5f608305a05c0a50
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 0.9976

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.xyz/app/406889139/coin-master-spin-pattern-game-hack PDF link annotation
    • http://www.yes-info.fr/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.yes-info.fr/images/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • http://www.yes-info.fr/images/apps-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.yes-info.fr/images/free-robux-download_GM431946152.pdfIn PDF document text
    • http://www.yes-info.fr/images/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.yes-info.fr/images/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://www.yes-info.fr/images/free-coin-master-coins-2021_GM406889139.pdfIn PDF document text
    • http://www.yes-info.fr/images/master-hack-coin_GM406889139.pdfIn PDF document text
    • http://www.yes-info.fr/images/coin-master-spins-free-2021_GM406889139.pdfIn PDF document text
    • http://www.yes-info.fr/images/coin-master-hack-mod-apk-download_GM406889139.pdfIn PDF document text
    • http://www.yes-info.fr/images/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://www.yes-info.fr/images/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.yes-info.fr/images/coin-master-ids-for-free-spins_GM406889139.pdfIn PDF document text
    • http://www.yes-info.fr/images/robux-free-online_GM431946152.pdfIn PDF document text
    • http://www.yes-info.fr/images/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
    • http://www.yes-info.fr/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.yes-info.fr/images/coin-master-hack-spin-link_GM406889139.pdfIn PDF document text
    • http://www.yes-info.fr/images/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • http://www.yes-info.fr/images/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://www.yes-info.fr/images/roblox-sexually_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
stream_003_off000048be.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48BE 29604 bytes
SHA-256: 79256289b13e58682819e819ae8b0dbee3a5ecec6da4636b6008593a90661b22
font_01_sfnt_off00008bc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BC3 17876 bytes
SHA-256: bd22fd35e13567494ff4a803842d6b5fa952e975cd9e2293b3775db85ba13e50