Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c818d7c00959575…

MALICIOUS

PDF

42.9 KB Created: 2021-05-12 06:29:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: d74d285de574ae070e0b62985e49c5a6 SHA-1: 09f51b081a0053dd6091350e6a4f80cdf6a7e95b SHA-256: 7c818d7c009595759111a0571e17f8fe73a312b16404faaaf4676fc83bea800e
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-hack-tool-without-verification-game-hack PDF link annotation
    • http://michalmatys.pl/images/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://michalmatys.pl/images/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://michalmatys.pl/images/coin-master-free-coins-link-2021-deutsch_GM406889139.pdfIn PDF document text
    • http://michalmatys.pl/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://michalmatys.pl/images/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://michalmatys.pl/images/robux-free-co_GM431946152.pdfIn PDF document text
    • http://michalmatys.pl/images/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://michalmatys.pl/images/coin-master-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://michalmatys.pl/images/coin-master-32-mod-hack-unlimited_GM406889139.pdfIn PDF document text
    • http://michalmatys.pl/images/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://michalmatys.pl/images/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://michalmatys.pl/images/coin-master-free-coins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://michalmatys.pl/images/robux-offers_GM431946152.pdfIn PDF document text
    • http://michalmatys.pl/images/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://michalmatys.pl/images/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://michalmatys.pl/images/free-roblox-followers-generator-2021_GM431946152.pdfIn PDF document text
    • http://michalmatys.pl/images/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://michalmatys.pl/images/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • http://michalmatys.pl/images/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://michalmatys.pl/images/free-robux-hack_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_off00004ad5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AD5 25108 bytes
SHA-256: 94fd59c36914f0413fa35f0cfaf5247685abe261e2a1bb9b7f24d474679168cd
font_01_sfnt_off000084e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84E7 18428 bytes
SHA-256: 0d4d1d3c8b3a8d9a8bf2514a91debdfd463a95143a55049788bc4d3b9a66685d

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