Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b502004bde5125b…

MALICIOUS

PDF

44.4 KB Created: 2021-05-12 02:44:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 477cc8acdfc1625cc1d8a57b5564cebd SHA-1: 64d2479eb470b03e045882e7c1e6ceca478fc81c SHA-256: 3b502004bde5125ba7fe8f0d00a16ca79c60c009a3256d625185880d230c7227
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 0.9980

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/roblox-download-pc-free-game-hack PDF link annotation
    • http://kirikkalesmmmo.org.tr/images/free-card-collection-in-coin-master_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/how-to-get-free-chest-in-coin-master_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/coin-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/how-to-hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/how-to-hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/free-executors-for-roblox_GM431946152.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/roblox-online-free_GM431946152.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/coin-master-free-spins-link-2021-app_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/coin-master-hack-dot-xyz_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/free-pe_GM479516143.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/coin-master-free-coins-and-spins_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_off00004a5e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A5E 27712 bytes
SHA-256: 70a9b9405102b9092c4b94bdcda4bcc37d06fed7a8ea0d3847310d8e5bca043d
font_01_sfnt_off00008972.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8972 18836 bytes
SHA-256: 335401c7e69d4718b9355a16245a633da97680606d3b3322095c59b658246ecd

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