Malicious PDF — malware analysis report

Static analysis result for SHA-256 05dd5d8ebc9fdf16…

MALICIOUS

PDF

40.8 KB Created: 2021-05-17 02:02:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 35b5839a8cf1cbf6e51244fbd758ceda SHA-1: 09386a98d17ff0a78a4ca7a443ac83e8884144e2 SHA-256: 05dd5d8ebc9fdf16a9e94d55476fd683e11e873edf8108b4a6e19d41603e9d7c
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 0.9971

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-cheats-game-hack PDF link annotation
    • http://safari-crimea.com/images/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://safari-crimea.com/images/coin-master-hack-tool-without-human-verification_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://safari-crimea.com/images/how-to-create-group-in-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://safari-crimea.com/images/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/is-minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://safari-crimea.com/images/free-free-robux_GM431946152.pdfIn PDF document text
    • http://safari-crimea.com/images/free-coins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://safari-crimea.com/images/coin-master-free-spins-save_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://safari-crimea.com/images/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • http://safari-crimea.com/images/minecraft-menu_GM479516143.pdfIn PDF document text
    • http://safari-crimea.com/images/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://safari-crimea.com/images/wurst-client_GM479516143.pdfIn PDF document text
    • http://safari-crimea.com/images/free-coins-and-spins-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/hack-coin-master-1_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/coin-master-hack-2021-free_GM406889139.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_off000046ba.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46BA 24416 bytes
SHA-256: 3eb93b39f207439267702aae9fffe442d39724b72cab560b7a37f591c08a88ec
font_01_sfnt_off00007e93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E93 17712 bytes
SHA-256: 0cf37999a32b0b26e6dcf722a916a3c4a254350d50e55584564eaaa0ec63890c

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