Malicious PDF — malware analysis report

Static analysis result for SHA-256 759de610b66b6466…

MALICIOUS

PDF

43.6 KB Created: 2021-05-11 21:32:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: fd7291a85151043c7b7ee8dac5a45faf SHA-1: a089f9695b9fa4158a2755fd829001bdabe6e00e SHA-256: 759de610b66b6466c6398e62fcef56cd5fe5e3ddcb655dc110507809323cdbdc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs, with a primary focus on luring users with 'free Robux' and 'game hack' themes. The heuristic firings strongly indicate that the document's purpose is to redirect users to malicious sites, likely for credential harvesting or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest a malicious intent to exploit user interest in game-related cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9959

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/431946152/how-to-get-free-robux-easy-2021-game-hack PDF link annotation
    • http://www.yes-info.fr/images/hack-coin-master-apk-358_GM406889139.pdfIn PDF document text
    • http://www.yes-info.fr/images/pasos-para-hackear-coins-master_GM406889139.pdfIn PDF document text
    • http://www.yes-info.fr/images/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.yes-info.fr/images/coin-master-spin-hack-app_GM406889139.pdfIn PDF document text
    • http://www.yes-info.fr/images/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.yes-info.fr/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://www.yes-info.fr/images/robux-free-online_GM431946152.pdfIn PDF document text
    • http://www.yes-info.fr/images/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.yes-info.fr/images/rbx-roblox-robux_GM431946152.pdfIn PDF document text
    • http://www.yes-info.fr/images/coin-master-free-spin-now_GM406889139.pdfIn PDF document text
    • http://www.yes-info.fr/images/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.yes-info.fr/images/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://www.yes-info.fr/images/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.yes-info.fr/images/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://www.yes-info.fr/images/free-minecraft-domain_GM479516143.pdfIn PDF document text
    • http://www.yes-info.fr/images/how-to-play-coin-master_GM406889139.pdfIn PDF document text
    • http://www.yes-info.fr/images/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://www.yes-info.fr/images/free-roblox-website_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/how-to-get-minecraft-pe-for-free_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_003_off000049d2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49D2 26352 bytes
SHA-256: 5d0c2d7656be6e63dccd3dfe161155e80486b765c47de6095d8ae3bb55b5e0d6
font_01_sfnt_off0000836c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x836C 19744 bytes
SHA-256: 1f4469006b3228f8b37afff40f760c3756f87ee131da2065c082733edc0b1e65

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