Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbd5952ff2917342…

MALICIOUS

PDF

45.6 KB Created: 2021-05-13 02:34:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 92565209eb87964b7b3f6d4db61c6784 SHA-1: dfe5e9856e98935bfa051ec75b8e3a5c33cdb136 SHA-256: dbd5952ff29173420a3f8bc6cee448702c71dcd2170873b5890deeac5bd43345
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 0.9507

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-hack-app-download-free-game-hack PDF link annotation
    • http://grafi-web.be/images/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://grafi-web.be/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://grafi-web.be/images/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://grafi-web.be/images/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://grafi-web.be/images/coin-master-hack-tool-v1-9-download_GM406889139.pdfIn PDF document text
    • http://grafi-web.be/images/fast-robux-online_GM431946152.pdfIn PDF document text
    • http://grafi-web.be/images/coinmaster-fan-page_GM406889139.pdfIn PDF document text
    • http://grafi-web.be/images/coin-master-hack-download_GM406889139.pdfIn PDF document text
    • http://grafi-web.be/images/how-to-hack-coin-master-ios-jailbreak_GM406889139.pdfIn PDF document text
    • http://grafi-web.be/images/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://grafi-web.be/images/free-spin-card-exchange-coin-master_GM406889139.pdfIn PDF document text
    • http://grafi-web.be/images/free-free-robux_GM431946152.pdfIn PDF document text
    • http://grafi-web.be/images/earn-robux-com_GM431946152.pdfIn PDF document text
    • http://grafi-web.be/images/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://grafi-web.be/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://grafi-web.be/images/coin-master-cards_GM406889139.pdfIn PDF document text
    • http://grafi-web.be/images/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://grafi-web.be/images/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://grafi-web.be/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://grafi-web.be/images/online-coin-master-hack-here_GM406889139.pdfIn PDF document text
    • https://coinmasterspinandcoin.comIn 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_off00004aec.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AEC 25396 bytes
SHA-256: 7f70c969aa1a32863026fc151121cd60e3050e7fd5272aecba511b27442dff4f
font_01_sfnt_off000084be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84BE 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008ea9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA9 18636 bytes
SHA-256: fa7a6da1b4bcc113a0958a5ae0d8c2ab7d580afb69fd53804aad306f80425e53

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